15948420664 has 32 divisors (see below), whose sum is σ = 34540700400. Its totient is φ = 6822853120.

The previous prime is 15948420661. The next prime is 15948420703. The reversal of 15948420664 is 46602484951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15948420661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5328859 + ... + 5331850.

Almost surely, 2^15948420664 is an apocalyptic number.

It is an amenable number.

15948420664 is an abundant number, since it is smaller than the sum of its proper divisors (18592279736).

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

15948420664 is a wasteful number, since it uses less digits than its factorization.

15948420664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10660743 (or 10660739 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 15948420664 in words is "fifteen billion, nine hundred forty-eight million, four hundred twenty thousand, six hundred sixty-four".