165456156140 has 48 divisors (see below), whose sum is σ = 379230677280. Its totient is φ = 60136404480.

The previous prime is 165456156121. The next prime is 165456156143. The reversal of 165456156140 is 41651654561.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 165456156091 and 165456156100.

It is not an unprimeable number, because it can be changed into a prime (165456156143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268496 + ... + 634824.

It is an arithmetic number, because the mean of its divisors is an integer number (7900639110).

Almost surely, 2^165456156140 is an apocalyptic number.

165456156140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165456156140 is an abundant number, since it is smaller than the sum of its proper divisors (213774521140).

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

165456156140 is a wasteful number, since it uses less digits than its factorization.

165456156140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368402 (or 368400 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 44.

The spelling of 165456156140 in words is "one hundred sixty-five billion, four hundred fifty-six million, one hundred fifty-six thousand, one hundred forty".