15664960732542 has 32 divisors (see below), whose sum is σ = 34182216670464. Its totient is φ = 4746385502400.

The previous prime is 15664960732517. The next prime is 15664960732571. The reversal of 15664960732542 is 24523706946651.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13755634 + ... + 14850837.

It is an arithmetic number, because the mean of its divisors is an integer number (1068194270952).

Almost surely, 2^{15664960732542} is an apocalyptic number.

15664960732542 is an abundant number, since it is smaller than the sum of its proper divisors (18517255937922).

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

15664960732542 is a wasteful number, since it uses less digits than its factorization.

15664960732542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28614784.

The product of its (nonzero) digits is 65318400, while the sum is 60.

The spelling of 15664960732542 in words is "fifteen trillion, six hundred sixty-four billion, nine hundred sixty million, seven hundred thirty-two thousand, five hundred forty-two".