84180858031 has 2 divisors, whose sum is σ = 84180858032. Its totient is φ = 84180858030.

The previous prime is 84180858007. The next prime is 84180858067. The reversal of 84180858031 is 13085808148.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84180858031 - 2²¹ = 84178760879 is a prime.

It is a super-2 number, since 2×84180858031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84180858131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42090429015 + 42090429016.

It is an arithmetic number, because the mean of its divisors is an integer number (42090429016).

Almost surely, 2^84180858031 is an apocalyptic number.

84180858031 is a deficient number, since it is larger than the sum of its proper divisors (1).

84180858031 is an equidigital number, since it uses as much as digits as its factorization.

84180858031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 245760, while the sum is 46.

The spelling of 84180858031 in words is "eighty-four billion, one hundred eighty million, eight hundred fifty-eight thousand, thirty-one".