21620546252010 has 48 divisors (see below), whose sum is σ = 56585694597120. Its totient is φ = 5727297016800.

The previous prime is 21620546251981. The next prime is 21620546252033. The reversal of 21620546252010 is 1025264502612.

21620546252010 is a `hidden beast` number, since 2 + 1 + 6 + 2 + 0 + 5 + 4 + 625 + 20 + 1 + 0 = 666.

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, 795444330 + ... + 795471509.

It is an arithmetic number, because the mean of its divisors is an integer number (1178868637440).

Almost surely, 2^{21620546252010} is an apocalyptic number.

21620546252010 is an abundant number, since it is smaller than the sum of its proper divisors (34965148345110).

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

21620546252010 is a wasteful number, since it uses less digits than its factorization.

21620546252010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590916003 (or 1590916000 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 21620546252010 in words is "twenty-one trillion, six hundred twenty billion, five hundred forty-six million, two hundred fifty-two thousand, ten".