21510642462034 has 16 divisors (see below), whose sum is σ = 35199308271456. Its totient is φ = 9777543880000.

The previous prime is 21510642461999. The next prime is 21510642462073. The reversal of 21510642462034 is 43026424601512.

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, 14921034 + ... + 16299034.

It is an arithmetic number, because the mean of its divisors is an integer number (2199956766966).

Almost surely, 2^{21510642462034} is an apocalyptic number.

21510642462034 is a deficient number, since it is larger than the sum of its proper divisors (13688665809422).

21510642462034 is a wasteful number, since it uses less digits than its factorization.

21510642462034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2087561.

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 21510642462034 in words is "twenty-one trillion, five hundred ten billion, six hundred forty-two million, four hundred sixty-two thousand, thirty-four".