21274551017174 has 32 divisors (see below), whose sum is σ = 40111755780096. Its totient is φ = 8237235555360.

The previous prime is 21274551017131. The next prime is 21274551017249. The reversal of 21274551017174 is 47171015547212.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Curzon number.

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, 1243535462 + ... + 1243552569.

It is an arithmetic number, because the mean of its divisors is an integer number (1253492368128).

Almost surely, 2^{21274551017174} is an apocalyptic number.

21274551017174 is a deficient number, since it is larger than the sum of its proper divisors (18837204762922).

21274551017174 is a wasteful number, since it uses less digits than its factorization.

21274551017174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487088100.

The product of its (nonzero) digits is 548800, while the sum is 47.

The spelling of 21274551017174 in words is "twenty-one trillion, two hundred seventy-four billion, five hundred fifty-one million, seventeen thousand, one hundred seventy-four".