68687035775 has 48 divisors (see below), whose sum is σ = 91037506560. Its totient is φ = 51315465600.

The previous prime is 68687035759. The next prime is 68687035789. The reversal of 68687035775 is 57753078686.

It is not a de Polignac number, because 68687035775 - 2⁴ = 68687035759 is a prime.

It is a super-2 number, since 2×68687035775² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3200330 + ... + 3221720.

It is an arithmetic number, because the mean of its divisors is an integer number (1896614720).

Almost surely, 2^68687035775 is an apocalyptic number.

68687035775 is a deficient number, since it is larger than the sum of its proper divisors (22350470785).

68687035775 is a wasteful number, since it uses less digits than its factorization.

68687035775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21576 (or 21571 counting only the distinct ones).

The product of its (nonzero) digits is 59270400, while the sum is 62.

The spelling of 68687035775 in words is "sixty-eight billion, six hundred eighty-seven million, thirty-five thousand, seven hundred seventy-five".