331549275816 has 224 divisors, whose sum is σ = 1017728150400. Its totient is φ = 100376651520.

The previous prime is 331549275697. The next prime is 331549275829. The reversal of 331549275816 is 618572945133.

It is a happy number.

331549275816 is a `hidden beast` number, since 3 + 3 + 1 + 5 + 492 + 75 + 81 + 6 = 666.

It is a super-2 number, since 2×331549275816² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 106298305 + ... + 106301423.

Almost surely, 2^331549275816 is an apocalyptic number.

331549275816 is a gapful number since it is divisible by the number (36) 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 331549275816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (508864075200).

331549275816 is an abundant number, since it is smaller than the sum of its proper divisors (686178874584).

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

331549275816 is a wasteful number, since it uses less digits than its factorization.

331549275816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4811 (or 4792 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The spelling of 331549275816 in words is "three hundred thirty-one billion, five hundred forty-nine million, two hundred seventy-five thousand, eight hundred sixteen".