16920411055025 has 12 divisors (see below), whose sum is σ = 21069097622400. Its totient is φ = 13479691480080.

The previous prime is 16920411055003. The next prime is 16920411055049. The reversal of 16920411055025 is 52055011402961.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-16920411055025 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1415928005 + ... + 1415939954.

It is an arithmetic number, because the mean of its divisors is an integer number (1755758135200).

Almost surely, 2^{16920411055025} is an apocalyptic number.

It is an amenable number.

16920411055025 is a deficient number, since it is larger than the sum of its proper divisors (4148686567375).

16920411055025 is a wasteful number, since it uses less digits than its factorization.

16920411055025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2831868208 (or 2831868203 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 41.

Adding to 16920411055025 its reverse (52055011402961), we get a palindrome (68975422457986).

The spelling of 16920411055025 in words is "sixteen trillion, nine hundred twenty billion, four hundred eleven million, fifty-five thousand, twenty-five".