15990460704 has 72 divisors (see below), whose sum is σ = 45708642252. Its totient is φ = 5302517760.

The previous prime is 15990460691. The next prime is 15990460709. The reversal of 15990460704 is 40706409951.

It can be written as a sum of positive squares in 2 ways, for example, as 14587808400 + 1402652304 = 120780^2 + 37452^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a self number, because there is not a number n which added to its sum of digits gives 15990460704.

It is not an unprimeable number, because it can be changed into a prime (15990460709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88257 + ... + 199424.

Almost surely, 2^15990460704 is an apocalyptic number.

It is an amenable number.

15990460704 is an abundant number, since it is smaller than the sum of its proper divisors (29718181548).

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

15990460704 is a wasteful number, since it uses less digits than its factorization.

15990460704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287890 (or 287879 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 15990460704 in words is "fifteen billion, nine hundred ninety million, four hundred sixty thousand, seven hundred four".