165653426322516 has 96 divisors (see below), whose sum is σ = 423250599784320. Its totient is φ = 50009057280000.

The previous prime is 165653426322487. The next prime is 165653426322649. The reversal of 165653426322516 is 615223624356561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 852130320 + ... + 852324696.

It is an arithmetic number, because the mean of its divisors is an integer number (4408860414420).

Almost surely, 2^{165653426322516} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165653426322516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211625299892160).

165653426322516 is an abundant number, since it is smaller than the sum of its proper divisors (257597173461804).

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

165653426322516 is a wasteful number, since it uses less digits than its factorization.

165653426322516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218665 (or 218663 counting only the distinct ones).

The product of its digits is 46656000, while the sum is 57.

The spelling of 165653426322516 in words is "one hundred sixty-five trillion, six hundred fifty-three billion, four hundred twenty-six million, three hundred twenty-two thousand, five hundred sixteen".