4020972431394 has 32 divisors (see below), whose sum is σ = 8515906310016. Its totient is φ = 1261347344640.

The previous prime is 4020972431389. The next prime is 4020972431401. The reversal of 4020972431394 is 4931342790204.

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, 1131262 + ... + 3053145.

It is an arithmetic number, because the mean of its divisors is an integer number (266122072188).

Almost surely, 2^{4020972431394} is an apocalyptic number.

4020972431394 is an abundant number, since it is smaller than the sum of its proper divisors (4494933878622).

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

4020972431394 is a wasteful number, since it uses less digits than its factorization.

4020972431394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4193850.

The product of its (nonzero) digits is 1306368, while the sum is 48.

The spelling of 4020972431394 in words is "four trillion, twenty billion, nine hundred seventy-two million, four hundred thirty-one thousand, three hundred ninety-four".