68669527920 has 160 divisors (see below), whose sum is σ = 256090990080. Its totient is φ = 14869785600.

The previous prime is 68669527907. The next prime is 68669527937. The reversal of 68669527920 is 2972596686.

It is a Harshad number since it is a multiple of its sum of digits (60).

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, 1043731 + ... + 1107570.

It is an arithmetic number, because the mean of its divisors is an integer number (1600568688).

Almost surely, 2^68669527920 is an apocalyptic number.

68669527920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68669527920 is an abundant number, since it is smaller than the sum of its proper divisors (187421462160).

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

68669527920 is a wasteful number, since it uses less digits than its factorization.

68669527920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2151343 (or 2151337 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 60.

The spelling of 68669527920 in words is "sixty-eight billion, six hundred sixty-nine million, five hundred twenty-seven thousand, nine hundred twenty".