21534225140524 has 12 divisors (see below), whose sum is σ = 37684926481384. Its totient is φ = 10767103288704.

The previous prime is 21534225140473. The next prime is 21534225140573. The reversal of 21534225140524 is 42504152243512.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8006332 + ... + 10352284.

Almost surely, 2^{21534225140524} is an apocalyptic number.

It is an amenable number.

21534225140524 is a deficient number, since it is larger than the sum of its proper divisors (16150701340860).

21534225140524 is a wasteful number, since it uses less digits than its factorization.

21534225140524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4640784 (or 4640782 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 40.

The spelling of 21534225140524 in words is "twenty-one trillion, five hundred thirty-four billion, two hundred twenty-five million, one hundred forty thousand, five hundred twenty-four".