21360870004 has 48 divisors (see below), whose sum is σ = 40013930880. Its totient is φ = 9948113280.

The previous prime is 21360869963. The next prime is 21360870043. The reversal of 21360870004 is 40007806312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2007402 + ... + 2018014.

It is an arithmetic number, because the mean of its divisors is an integer number (833623560).

Almost surely, 2^21360870004 is an apocalyptic number.

It is an amenable number.

21360870004 is a deficient number, since it is larger than the sum of its proper divisors (18653060876).

21360870004 is a wasteful number, since it uses less digits than its factorization.

21360870004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11080 (or 11078 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The spelling of 21360870004 in words is "twenty-one billion, three hundred sixty million, eight hundred seventy thousand, four".