68957614991 has 4 divisors (see below), whose sum is σ = 68959690800. Its totient is φ = 68955539184.

The previous prime is 68957614961. The next prime is 68957615029. The reversal of 68957614991 is 19941675986.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68957614991 - 2¹⁴ = 68957598607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68957614931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 987251 + ... + 1054788.

It is an arithmetic number, because the mean of its divisors is an integer number (17239922700).

Almost surely, 2^68957614991 is an apocalyptic number.

68957614991 is a deficient number, since it is larger than the sum of its proper divisors (2075809).

68957614991 is a wasteful number, since it uses less digits than its factorization.

68957614991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075808.

The product of its digits is 29393280, while the sum is 65.

The spelling of 68957614991 in words is "sixty-eight billion, nine hundred fifty-seven million, six hundred fourteen thousand, nine hundred ninety-one".