68216545031 has 8 divisors (see below), whose sum is σ = 72325473984. Its totient is φ = 64118304000.

The previous prime is 68216545027. The next prime is 68216545081. The reversal of 68216545031 is 13054561286.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68216545031 - 2² = 68216545027 is a prime.

It is a super-2 number, since 2×68216545031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68216545031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68216545081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2658830 + ... + 2684363.

It is an arithmetic number, because the mean of its divisors is an integer number (9040684248).

Almost surely, 2^68216545031 is an apocalyptic number.

68216545031 is a deficient number, since it is larger than the sum of its proper divisors (4108928953).

68216545031 is a wasteful number, since it uses less digits than its factorization.

68216545031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5343961.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 68216545031 in words is "sixty-eight billion, two hundred sixteen million, five hundred forty-five thousand, thirty-one".