165215325245610 has 64 divisors (see below), whose sum is σ = 402388951910400. Its totient is φ = 43405843709760.

The previous prime is 165215325245527. The next prime is 165215325245629. The reversal of 165215325245610 is 16542523512561.

It is a super-2 number, since 2×165215325245610² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 165215325245610.

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, 24742032 + ... + 30701771.

It is an arithmetic number, because the mean of its divisors is an integer number (6287327373600).

Almost surely, 2^{165215325245610} is an apocalyptic number.

165215325245610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165215325245610 is an abundant number, since it is smaller than the sum of its proper divisors (237173626664790).

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

165215325245610 is a wasteful number, since it uses less digits than its factorization.

165215325245610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55445283.

The product of its (nonzero) digits is 2160000, while the sum is 48.

The spelling of 165215325245610 in words is "one hundred sixty-five trillion, two hundred fifteen billion, three hundred twenty-five million, two hundred forty-five thousand, six hundred ten".