21374389692292 has 48 divisors (see below), whose sum is σ = 46724268680320. Its totient is φ = 8329596498432.

The previous prime is 21374389692289. The next prime is 21374389692391. The reversal of 21374389692292 is 29229698347312.

It is a Harshad number since it is a multiple of its sum of digits (67).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 438190917 + ... + 438239692.

Almost surely, 2^{21374389692292} is an apocalyptic number.

It is an amenable number.

21374389692292 is an abundant number, since it is smaller than the sum of its proper divisors (25349878988028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21374389692292 is a wasteful number, since it uses less digits than its factorization.

21374389692292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876430700 (or 876430698 counting only the distinct ones).

The product of its digits is 141087744, while the sum is 67.

The spelling of 21374389692292 in words is "twenty-one trillion, three hundred seventy-four billion, three hundred eighty-nine million, six hundred ninety-two thousand, two hundred ninety-two".