161010510555 has 8 divisors (see below), whose sum is σ = 257616816912. Its totient is φ = 85872272288.

The previous prime is 161010510553. The next prime is 161010510593. The reversal of 161010510555 is 555015010161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161010510555 - 2¹ = 161010510553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161010510553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5367017004 + ... + 5367017033.

It is an arithmetic number, because the mean of its divisors is an integer number (32202102114).

Almost surely, 2^161010510555 is an apocalyptic number.

161010510555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161010510555 is a deficient number, since it is larger than the sum of its proper divisors (96606306357).

161010510555 is a wasteful number, since it uses less digits than its factorization.

161010510555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10734034045.

The product of its (nonzero) digits is 3750, while the sum is 30.

The spelling of 161010510555 in words is "one hundred sixty-one billion, ten million, five hundred ten thousand, five hundred fifty-five".