201668295504 has 160 divisors (see below), whose sum is σ = 625321226880. Its totient is φ = 55327850496.

The previous prime is 201668295481. The next prime is 201668295539. The reversal of 201668295504 is 405592866102.

It is a super-2 number, since 2×201668295504² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 298737 + ... + 701840.

It is an arithmetic number, because the mean of its divisors is an integer number (3908257668).

Almost surely, 2^201668295504 is an apocalyptic number.

201668295504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

201668295504 is an abundant number, since it is smaller than the sum of its proper divisors (423652931376).

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

201668295504 is a wasteful number, since it uses less digits than its factorization.

201668295504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000637 (or 1000631 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 48.

The spelling of 201668295504 in words is "two hundred one billion, six hundred sixty-eight million, two hundred ninety-five thousand, five hundred four".