331606745280 has 168 divisors, whose sum is σ = 1152348654912. Its totient is φ = 87516758016.

The previous prime is 331606745257. The next prime is 331606745291. The reversal of 331606745280 is 82547606133.

331606745280 is a `hidden beast` number, since 3 + 3 + 1 + 60 + 67 + 4 + 528 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 314152 + ... + 872871.

It is an arithmetic number, because the mean of its divisors is an integer number (6859218184).

Almost surely, 2^331606745280 is an apocalyptic number.

331606745280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

331606745280 is an abundant number, since it is smaller than the sum of its proper divisors (820741909632).

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

331606745280 is a wasteful number, since it uses less digits than its factorization.

331606745280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187143 (or 1187130 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 331606745280 in words is "three hundred thirty-one billion, six hundred six million, seven hundred forty-five thousand, two hundred eighty".