391276222272 has 896 divisors, whose sum is σ = 1337101516800. Its totient is φ = 111281651712.

The previous prime is 391276222241. The next prime is 391276222291. The reversal of 391276222272 is 272222672193.

391276222272 is a `hidden beast` number, since 3 + 9 + 12 + 7 + 622 + 2 + 2 + 7 + 2 = 666.

Its product of digits (508032) is a multiple of the sum of its prime divisors (324).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3080915073 + ... + 3080915199.

It is an arithmetic number, because the mean of its divisors is an integer number (1492300800).

Almost surely, 2^391276222272 is an apocalyptic number.

391276222272 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 391276222272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (668550758400).

391276222272 is an abundant number, since it is smaller than the sum of its proper divisors (945825294528).

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

391276222272 is a wasteful number, since it uses less digits than its factorization.

391276222272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 324 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The spelling of 391276222272 in words is "three hundred ninety-one billion, two hundred seventy-six million, two hundred twenty-two thousand, two hundred seventy-two".