668754051000 has 128 divisors (see below), whose sum is σ = 2384585948160. Its totient is φ = 152858064000.

The previous prime is 668754050977. The next prime is 668754051023. The reversal of 668754051000 is 150457866.

It is an interprime number because it is at equal distance from previous prime (668754050977) and next prime (668754051023).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 15901716 + ... + 15943715.

It is an arithmetic number, because the mean of its divisors is an integer number (18629577720).

Almost surely, 2^668754051000 is an apocalyptic number.

668754051000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

668754051000 is an abundant number, since it is smaller than the sum of its proper divisors (1715831897160).

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

668754051000 is a wasteful number, since it uses less digits than its factorization.

668754051000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31845462 (or 31845448 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 668754051000 in words is "six hundred sixty-eight billion, seven hundred fifty-four million, fifty-one thousand".