15900980468 has 6 divisors (see below), whose sum is σ = 27826715826. Its totient is φ = 7950490232.

The previous prime is 15900980429. The next prime is 15900980479. The reversal of 15900980468 is 86408900951.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15618000784 + 282979684 = 124972^2 + 16822^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1987622555 + ... + 1987622562.

It is an arithmetic number, because the mean of its divisors is an integer number (4637785971).

Almost surely, 2^15900980468 is an apocalyptic number.

It is an amenable number.

15900980468 is a deficient number, since it is larger than the sum of its proper divisors (11925735358).

15900980468 is a wasteful number, since it uses less digits than its factorization.

15900980468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3975245121 (or 3975245119 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 50.

The spelling of 15900980468 in words is "fifteen billion, nine hundred million, nine hundred eighty thousand, four hundred sixty-eight".