43420351077 has 10 divisors (see below), whose sum is σ = 64862499878. Its totient is φ = 28946900664.

The previous prime is 43420351043. The next prime is 43420351087. The reversal of 43420351077 is 77015302434.

43420351077 is a `hidden beast` number, since 434 + 203 + 5 + 10 + 7 + 7 = 666.

43420351077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 36821388321 + 6598962756 = 191889^2 + 81234^2 .

It is not a de Polignac number, because 43420351077 - 2¹⁹ = 43419826789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43420351087) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 268026778 + ... + 268026939.

Almost surely, 2^43420351077 is an apocalyptic number.

It is an amenable number.

43420351077 is a deficient number, since it is larger than the sum of its proper divisors (21442148801).

43420351077 is an equidigital number, since it uses as much as digits as its factorization.

43420351077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536053729 (or 536053720 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The spelling of 43420351077 in words is "forty-three billion, four hundred twenty million, three hundred fifty-one thousand, seventy-seven".