83668732480 has 28 divisors (see below), whose sum is σ = 199236169980. Its totient is φ = 33467492864.

The previous prime is 83668732451. The next prime is 83668732487. The reversal of 83668732480 is 8423786638.

It can be written as a sum of positive squares in 2 ways, for example, as 43834959424 + 39833773056 = 209368^2 + 199584^2 .

It is not an unprimeable number, because it can be changed into a prime (83668732487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130732075 + ... + 130732714.

Almost surely, 2^83668732480 is an apocalyptic number.

83668732480 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

83668732480 is an abundant number, since it is smaller than the sum of its proper divisors (115567437500).

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

83668732480 is a wasteful number, since it uses less digits than its factorization.

83668732480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261464806 (or 261464796 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 55.

The spelling of 83668732480 in words is "eighty-three billion, six hundred sixty-eight million, seven hundred thirty-two thousand, four hundred eighty".