361999668816 has 60 divisors (see below), whose sum is σ = 1013247527968. Its totient is φ = 120648543552.

The previous prime is 361999668803. The next prime is 361999668847. The reversal of 361999668816 is 618866999163.

361999668816 is a `hidden beast` number, since 361 + 99 + 96 + 6 + 88 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 798291 + ... + 1166733.

Almost surely, 2^361999668816 is an apocalyptic number.

361999668816 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

361999668816 is an abundant number, since it is smaller than the sum of its proper divisors (651247859152).

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

361999668816 is a wasteful number, since it uses less digits than its factorization.

361999668816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375280 (or 375271 counting only the distinct ones).

The product of its digits is 181398528, while the sum is 72.

The spelling of 361999668816 in words is "three hundred sixty-one billion, nine hundred ninety-nine million, six hundred sixty-eight thousand, eight hundred sixteen".