21454554335524 has 24 divisors (see below), whose sum is σ = 39754171215360. Its totient is φ = 10096224276096.

The previous prime is 21454554335519. The next prime is 21454554335587. The reversal of 21454554335524 is 42553345545412.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31302669 + ... + 31980715.

It is an arithmetic number, because the mean of its divisors is an integer number (1656423800640).

Almost surely, 2^{21454554335524} is an apocalyptic number.

It is an amenable number.

21454554335524 is a deficient number, since it is larger than the sum of its proper divisors (18299616879836).

21454554335524 is a wasteful number, since it uses less digits than its factorization.

21454554335524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143387 (or 1143385 counting only the distinct ones).

The product of its digits is 28800000, while the sum is 52.

The spelling of 21454554335524 in words is "twenty-one trillion, four hundred fifty-four billion, five hundred fifty-four million, three hundred thirty-five thousand, five hundred twenty-four".