21374332310547 has 24 divisors (see below), whose sum is σ = 32051515033200. Its totient is φ = 13709575349568.

The previous prime is 21374332310483. The next prime is 21374332310549. The reversal of 21374332310547 is 74501323347312.

21374332310547 is a `hidden beast` number, since 2 + 1 + 3 + 7 + 43 + 32 + 31 + 0 + 547 = 666.

It is not a de Polignac number, because 21374332310547 - 2⁶ = 21374332310483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21374332310549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 144615172 + ... + 144762897.

It is an arithmetic number, because the mean of its divisors is an integer number (1335479793050).

Almost surely, 2^{21374332310547} is an apocalyptic number.

21374332310547 is a deficient number, since it is larger than the sum of its proper divisors (10677182722653).

21374332310547 is a wasteful number, since it uses less digits than its factorization.

21374332310547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289378387 (or 289378384 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 45.

Adding to 21374332310547 its reverse (74501323347312), we get a palindrome (95875655657859).

The spelling of 21374332310547 in words is "twenty-one trillion, three hundred seventy-four billion, three hundred thirty-two million, three hundred ten thousand, five hundred forty-seven".