15530872167668 has 48 divisors (see below), whose sum is σ = 32407180580544. Its totient is φ = 6419189399040.

The previous prime is 15530872167653. The next prime is 15530872167779. The reversal of 15530872167668 is 86676127803551.

It is a super-2 number, since 2×15530872167668² (a number of 27 digits) contains 22 as substring.

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, 202587605 + ... + 202664252.

It is an arithmetic number, because the mean of its divisors is an integer number (675149595428).

Almost surely, 2^{15530872167668} is an apocalyptic number.

It is an amenable number.

15530872167668 is an abundant number, since it is smaller than the sum of its proper divisors (16876308412876).

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

15530872167668 is a wasteful number, since it uses less digits than its factorization.

15530872167668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405251952 (or 405251950 counting only the distinct ones).

The product of its (nonzero) digits is 101606400, while the sum is 65.

The spelling of 15530872167668 in words is "fifteen trillion, five hundred thirty billion, eight hundred seventy-two million, one hundred sixty-seven thousand, six hundred sixty-eight".