68862973493 has 4 divisors (see below), whose sum is σ = 68865190368. Its totient is φ = 68860756620.

The previous prime is 68862973489. The next prime is 68862973541. The reversal of 68862973493 is 39437926886.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68862973493 - 2² = 68862973489 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 (68862970493) 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, 1061171 + ... + 1124192.

It is an arithmetic number, because the mean of its divisors is an integer number (17216297592).

Almost surely, 2^68862973493 is an apocalyptic number.

It is an amenable number.

68862973493 is a deficient number, since it is larger than the sum of its proper divisors (2216875).

68862973493 is a wasteful number, since it uses less digits than its factorization.

68862973493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216874.

The product of its digits is 94058496, while the sum is 65.

The spelling of 68862973493 in words is "sixty-eight billion, eight hundred sixty-two million, nine hundred seventy-three thousand, four hundred ninety-three".