161477262177 has 64 divisors (see below), whose sum is σ = 284497920000. Its totient is φ = 78872647680.

The previous prime is 161477262113. The next prime is 161477262179. The reversal of 161477262177 is 771262774161.

It is not a de Polignac number, because 161477262177 - 2⁶ = 161477262113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (161477262179) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4099824 + ... + 4139022.

It is an arithmetic number, because the mean of its divisors is an integer number (4445280000).

Almost surely, 2^161477262177 is an apocalyptic number.

161477262177 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

161477262177 is a deficient number, since it is larger than the sum of its proper divisors (123020657823).

161477262177 is a wasteful number, since it uses less digits than its factorization.

161477262177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40286.

The product of its digits is 1382976, while the sum is 51.

The spelling of 161477262177 in words is "one hundred sixty-one billion, four hundred seventy-seven million, two hundred sixty-two thousand, one hundred seventy-seven".