21554511514032 has 80 divisors (see below), whose sum is σ = 63917469234432. Its totient is φ = 6131302183680.

The previous prime is 21554511513971. The next prime is 21554511514057. The reversal of 21554511514032 is 23041511545512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141224019 + ... + 141376562.

Almost surely, 2^{21554511514032} is an apocalyptic number.

It is an amenable number.

21554511514032 is an abundant number, since it is smaller than the sum of its proper divisors (42362957720400).

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

21554511514032 is a wasteful number, since it uses less digits than its factorization.

21554511514032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282600826 (or 282600820 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 39.

The spelling of 21554511514032 in words is "twenty-one trillion, five hundred fifty-four billion, five hundred eleven million, five hundred fourteen thousand, thirty-two".