165910653400 has 48 divisors (see below), whose sum is σ = 408432999240. Its totient is φ = 62460480000.

The previous prime is 165910653373. The next prime is 165910653449. The reversal of 165910653400 is 4356019561.

It is a happy number.

It is a super-2 number, since 2×165910653400² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24395226 + ... + 24402025.

Almost surely, 2^165910653400 is an apocalyptic number.

165910653400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165910653400 is an abundant number, since it is smaller than the sum of its proper divisors (242522345840).

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

165910653400 is a wasteful number, since it uses less digits than its factorization.

165910653400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48797284 (or 48797275 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 165910653400 in words is "one hundred sixty-five billion, nine hundred ten million, six hundred fifty-three thousand, four hundred".