15964406680740 has 96 divisors (see below), whose sum is σ = 51090617217024. Its totient is φ = 3648684681600.

The previous prime is 15964406680709. The next prime is 15964406680787. The reversal of 15964406680740 is 4708660446951.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3093097 + ... + 6441743.

It is an arithmetic number, because the mean of its divisors is an integer number (532193929344).

Almost surely, 2^{15964406680740} is an apocalyptic number.

15964406680740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15964406680740 is an abundant number, since it is smaller than the sum of its proper divisors (35126210536284).

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

15964406680740 is a wasteful number, since it uses less digits than its factorization.

15964406680740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3360017 (or 3360015 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 60.

The spelling of 15964406680740 in words is "fifteen trillion, nine hundred sixty-four billion, four hundred six million, six hundred eighty thousand, seven hundred forty".