16920125861955 has 16 divisors (see below), whose sum is σ = 27320570201760. Its totient is φ = 8941277518848.

The previous prime is 16920125861921. The next prime is 16920125862007. The reversal of 16920125861955 is 55916852102961.

It is not a de Polignac number, because 16920125861955 - 2²⁰ = 16920124813379 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5174348782 + ... + 5174352051.

It is an arithmetic number, because the mean of its divisors is an integer number (1707535637610).

Almost surely, 2^{16920125861955} is an apocalyptic number.

16920125861955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16920125861955 is a deficient number, since it is larger than the sum of its proper divisors (10400444339805).

16920125861955 is a wasteful number, since it uses less digits than its factorization.

16920125861955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10348700950.

The product of its (nonzero) digits is 11664000, while the sum is 60.

The spelling of 16920125861955 in words is "sixteen trillion, nine hundred twenty billion, one hundred twenty-five million, eight hundred sixty-one thousand, nine hundred fifty-five".