20540404502 has 16 divisors (see below), whose sum is σ = 31102671600. Its totient is φ = 10172904480.

The previous prime is 20540404471. The next prime is 20540404597.

20540404502 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, 820649 + ... + 845307.

It is an arithmetic number, because the mean of its divisors is an integer number (1943916975).

Almost surely, 2^20540404502 is an apocalyptic number.

20540404502 is a deficient number, since it is larger than the sum of its proper divisors (10562267098).

20540404502 is a wasteful number, since it uses less digits than its factorization.

20540404502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28591.

The product of its (nonzero) digits is 6400, while the sum is 26.

The spelling of 20540404502 in words is "twenty billion, five hundred forty million, four hundred four thousand, five hundred two".