21652556043030 has 128 divisors (see below), whose sum is σ = 56789188646400. Its totient is φ = 5239958169600.

The previous prime is 21652556042987. The next prime is 21652556043043. The reversal of 21652556043030 is 3034065525612.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 496835781 + ... + 496879359.

It is an arithmetic number, because the mean of its divisors is an integer number (443665536300).

Almost surely, 2^{21652556043030} is an apocalyptic number.

21652556043030 is an abundant number, since it is smaller than the sum of its proper divisors (35136632603370).

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

21652556043030 is a wasteful number, since it uses less digits than its factorization.

21652556043030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46190.

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 21652556043030 in words is "twenty-one trillion, six hundred fifty-two billion, five hundred fifty-six million, forty-three thousand, thirty".