161162776830 has 64 divisors (see below), whose sum is σ = 429914884608. Its totient is φ = 38332594560.

The previous prime is 161162776823. The next prime is 161162776837. The reversal of 161162776830 is 38677261161.

It is an interprime number because it is at equal distance from previous prime (161162776823) and next prime (161162776837).

It is a self number, because there is not a number n which added to its sum of digits gives 161162776830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161162776837) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4589794 + ... + 4624773.

It is an arithmetic number, because the mean of its divisors is an integer number (6717420072).

Almost surely, 2^161162776830 is an apocalyptic number.

161162776830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161162776830 is an abundant number, since it is smaller than the sum of its proper divisors (268752107778).

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

161162776830 is a wasteful number, since it uses less digits than its factorization.

161162776830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9214641.

The product of its (nonzero) digits is 508032, while the sum is 48.

The spelling of 161162776830 in words is "one hundred sixty-one billion, one hundred sixty-two million, seven hundred seventy-six thousand, eight hundred thirty".