15955798516 has 12 divisors (see below), whose sum is σ = 31911597088. Its totient is φ = 6838199352.

The previous prime is 15955798501. The next prime is 15955798519. The reversal of 15955798516 is 61589755951.

15955798516 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15955798519) 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, 284924946 + ... + 284925001.

Almost surely, 2^15955798516 is an apocalyptic number.

It is an amenable number.

15955798516 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

15955798516 is a wasteful number, since it uses less digits than its factorization.

15955798516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569849958 (or 569849956 counting only the distinct ones).

The product of its digits is 17010000, while the sum is 61.

The spelling of 15955798516 in words is "fifteen billion, nine hundred fifty-five million, seven hundred ninety-eight thousand, five hundred sixteen".