21113355265146 has 48 divisors (see below), whose sum is σ = 46610099827200. Its totient is φ = 6904793407200.

The previous prime is 21113355265133. The next prime is 21113355265187. The reversal of 21113355265146 is 64156255331112.

It is a happy number.

21113355265146 is a `hidden beast` number, since 2 + 1 + 1 + 1 + 3 + 3 + 552 + 6 + 51 + 46 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33989455 + ... + 34605053.

It is an arithmetic number, because the mean of its divisors is an integer number (971043746400).

Almost surely, 2^{21113355265146} is an apocalyptic number.

21113355265146 is an abundant number, since it is smaller than the sum of its proper divisors (25496744562054).

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

21113355265146 is a wasteful number, since it uses less digits than its factorization.

21113355265146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651611 (or 651608 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The spelling of 21113355265146 in words is "twenty-one trillion, one hundred thirteen billion, three hundred fifty-five million, two hundred sixty-five thousand, one hundred forty-six".