68542602975 has 312 divisors, whose sum is σ = 161319877248. Its totient is φ = 28060084800.

The previous prime is 68542602929. The next prime is 68542602977. The reversal of 68542602975 is 57920624586.

68542602975 is a `hidden beast` number, since 6 + 8 + 542 + 6 + 0 + 2 + 97 + 5 = 666.

It is not a de Polignac number, because 68542602975 - 2⁶ = 68542602911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68542602977) by changing a digit.

It is a polite number, since it can be written in 311 ways as a sum of consecutive naturals, for example, 1023023892 + ... + 1023023958.

Almost surely, 2^68542602975 is an apocalyptic number.

68542602975 is an abundant number, since it is smaller than the sum of its proper divisors (92777274273).

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

68542602975 is an frugal number, since it uses more digits than its factorization.

68542602975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 68542602975 in words is "sixty-eight billion, five hundred forty-two million, six hundred two thousand, nine hundred seventy-five".