20531154524 has 24 divisors (see below), whose sum is σ = 38057802048. Its totient is φ = 9657966080.

The previous prime is 20531154509. The next prime is 20531154551. The reversal of 20531154524 is 42545113502.

It is a congruent number.

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, 121709 + ... + 236379.

It is an arithmetic number, because the mean of its divisors is an integer number (1585741752).

Almost surely, 2^20531154524 is an apocalyptic number.

It is an amenable number.

20531154524 is a deficient number, since it is larger than the sum of its proper divisors (17526647524).

20531154524 is a wasteful number, since it uses less digits than its factorization.

20531154524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117325 (or 117323 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 20531154524 in words is "twenty billion, five hundred thirty-one million, one hundred fifty-four thousand, five hundred twenty-four".