20531413502 has 16 divisors (see below), whose sum is σ = 32697587520. Its totient is φ = 9635509248.

The previous prime is 20531413477. The next prime is 20531413517.

It is a happy number.

20531413502 is nontrivially palindromic in base 10.

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, 810227 + ... + 835182.

It is an arithmetic number, because the mean of its divisors is an integer number (2043599220).

Almost surely, 2^20531413502 is an apocalyptic number.

20531413502 is a deficient number, since it is larger than the sum of its proper divisors (12166174018).

20531413502 is a wasteful number, since it uses less digits than its factorization.

20531413502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645795.

The product of its (nonzero) digits is 3600, while the sum is 26.

The spelling of 20531413502 in words is "twenty billion, five hundred thirty-one million, four hundred thirteen thousand, five hundred two".