1660938872976 has 30 divisors (see below), whose sum is σ = 4648321985190. Its totient is φ = 553646290944.

The previous prime is 1660938872969. The next prime is 1660938873019. The reversal of 1660938872976 is 6792788390661.

1660938872976 is a `hidden beast` number, since 1 + 6 + 609 + 3 + 8 + 8 + 7 + 2 + 9 + 7 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 834701504400 + 826237368576 = 913620^2 + 908976^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5767148721 + ... + 5767149008.

It is an arithmetic number, because the mean of its divisors is an integer number (154944066173).

Almost surely, 2^{1660938872976} is an apocalyptic number.

1660938872976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1660938872976 is an abundant number, since it is smaller than the sum of its proper divisors (2987383112214).

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

1660938872976 is a wasteful number, since it uses less digits than its factorization.

1660938872976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11534297743 (or 11534297734 counting only the distinct ones).

The product of its (nonzero) digits is 329204736, while the sum is 72.

The spelling of 1660938872976 in words is "one trillion, six hundred sixty billion, nine hundred thirty-eight million, eight hundred seventy-two thousand, nine hundred seventy-six".