163037645477 has 4 divisors (see below), whose sum is σ = 186328737696. Its totient is φ = 139746553260.

The previous prime is 163037645429. The next prime is 163037645479. The reversal of 163037645477 is 774546730361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 163037645477 - 2¹⁰ = 163037644453 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 (163037645479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11645546099 + ... + 11645546112.

It is an arithmetic number, because the mean of its divisors is an integer number (46582184424).

Almost surely, 2^163037645477 is an apocalyptic number.

It is an amenable number.

163037645477 is a deficient number, since it is larger than the sum of its proper divisors (23291092219).

163037645477 is an equidigital number, since it uses as much as digits as its factorization.

163037645477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23291092218.

The product of its (nonzero) digits is 8890560, while the sum is 53.

The spelling of 163037645477 in words is "one hundred sixty-three billion, thirty-seven million, six hundred forty-five thousand, four hundred seventy-seven".