392724214681 has 16 divisors (see below), whose sum is σ = 422078745024. Its totient is φ = 364065698304.

The previous prime is 392724214669. The next prime is 392724214717. The reversal of 392724214681 is 186412427293.

It is a de Polignac number, because none of the positive numbers 2^k-392724214681 is a prime.

It is a super-2 number, since 2×392724214681² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (392724214601) by changing a digit.

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, 16655206 + ... + 16678768.

It is an arithmetic number, because the mean of its divisors is an integer number (26379921564).

Almost surely, 2^392724214681 is an apocalyptic number.

It is an amenable number.

392724214681 is a deficient number, since it is larger than the sum of its proper divisors (29354530343).

392724214681 is a wasteful number, since it uses less digits than its factorization.

392724214681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38280.

The product of its digits is 1161216, while the sum is 49.

The spelling of 392724214681 in words is "three hundred ninety-two billion, seven hundred twenty-four million, two hundred fourteen thousand, six hundred eighty-one".