68407272853808 has 20 divisors (see below), whose sum is σ = 151473247033680. Its totient is φ = 29317402651584.

The previous prime is 68407272853807. The next prime is 68407272853859. The reversal of 68407272853808 is 80835827270486.

It is a Smith number, since the sum of its digits (68) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (68407272853807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305389610843 + ... + 305389611066.

It is an arithmetic number, because the mean of its divisors is an integer number (7573662351684).

Almost surely, 2^{68407272853808} is an apocalyptic number.

It is an amenable number.

68407272853808 is an abundant number, since it is smaller than the sum of its proper divisors (83065974179872).

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

68407272853808 is a wasteful number, since it uses less digits than its factorization.

68407272853808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610779221924 (or 610779221918 counting only the distinct ones).

The product of its (nonzero) digits is 289013760, while the sum is 68.

The spelling of 68407272853808 in words is "sixty-eight trillion, four hundred seven billion, two hundred seventy-two million, eight hundred fifty-three thousand, eight hundred eight".