68975562623 has 4 divisors (see below), whose sum is σ = 75246068328. Its totient is φ = 62705056920.

The previous prime is 68975562589. The next prime is 68975562641. The reversal of 68975562623 is 32626557986.

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

It is a de Polignac number, because none of the positive numbers 2^k-68975562623 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 (68975562653) 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, 3135252836 + ... + 3135252857.

It is an arithmetic number, because the mean of its divisors is an integer number (18811517082).

Almost surely, 2^68975562623 is an apocalyptic number.

68975562623 is a deficient number, since it is larger than the sum of its proper divisors (6270505705).

68975562623 is a wasteful number, since it uses less digits than its factorization.

68975562623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6270505704.

The product of its digits is 32659200, while the sum is 59.

The spelling of 68975562623 in words is "sixty-eight billion, nine hundred seventy-five million, five hundred sixty-two thousand, six hundred twenty-three".