2538404471764 has 48 divisors (see below), whose sum is σ = 5344189889920. Its totient is φ = 1030595581440.

The previous prime is 2538404471711. The next prime is 2538404471767. The reversal of 2538404471764 is 4671744048352.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2538404471767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20738584 + ... + 20860624.

Almost surely, 2^{2538404471764} is an apocalyptic number.

It is an amenable number.

2538404471764 is an abundant number, since it is smaller than the sum of its proper divisors (2805785418156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2538404471764 is a wasteful number, since it uses less digits than its factorization.

2538404471764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161168 (or 161166 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 55.

The spelling of 2538404471764 in words is "two trillion, five hundred thirty-eight billion, four hundred four million, four hundred seventy-one thousand, seven hundred sixty-four".