161077764534 has 16 divisors (see below), whose sum is σ = 322159976688. Its totient is φ = 53691846912.

The previous prime is 161077764493. The next prime is 161077764553. The reversal of 161077764534 is 435467770161.

161077764534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456474 + ... + 728370.

It is an arithmetic number, because the mean of its divisors is an integer number (20134998543).

Almost surely, 2^161077764534 is an apocalyptic number.

161077764534 is an abundant number, since it is smaller than the sum of its proper divisors (161082212154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161077764534 is a wasteful number, since it uses less digits than its factorization.

161077764534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370639.

The product of its (nonzero) digits is 2963520, while the sum is 51.

The spelling of 161077764534 in words is "one hundred sixty-one billion, seventy-seven million, seven hundred sixty-four thousand, five hundred thirty-four".