21460837574 has 12 divisors (see below), whose sum is σ = 35383778052. Its totient is φ = 9754926060.

The previous prime is 21460837547. The next prime is 21460837589. The reversal of 21460837574 is 47573806412.

It is a super-2 number, since 2×21460837574² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 44340332 + ... + 44340815.

It is an arithmetic number, because the mean of its divisors is an integer number (2948648171).

Almost surely, 2^21460837574 is an apocalyptic number.

21460837574 is a deficient number, since it is larger than the sum of its proper divisors (13922940478).

21460837574 is a wasteful number, since it uses less digits than its factorization.

21460837574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88681171 (or 88681160 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 47.

The spelling of 21460837574 in words is "twenty-one billion, four hundred sixty million, eight hundred thirty-seven thousand, five hundred seventy-four".