165355455456 has 60 divisors (see below), whose sum is σ = 486305808912. Its totient is φ = 55118484288.

The previous prime is 165355455371. The next prime is 165355455541. The reversal of 165355455456 is 654554553561.

165355455456 is a `hidden beast` number, since 1 + 6 + 5 + 3 + 55 + 45 + 545 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (165355455371) and next prime (165355455541).

It is a super-2 number, since 2×165355455456² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 31894680 + ... + 31899863.

Almost surely, 2^165355455456 is an apocalyptic number.

165355455456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165355455456 is an abundant number, since it is smaller than the sum of its proper divisors (320950353456).

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

165355455456 is an equidigital number, since it uses as much as digits as its factorization.

165355455456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63794565 (or 63794548 counting only the distinct ones).

The product of its digits is 27000000, while the sum is 54.

The spelling of 165355455456 in words is "one hundred sixty-five billion, three hundred fifty-five million, four hundred fifty-five thousand, four hundred fifty-six".