68069971915 has 48 divisors (see below), whose sum is σ = 95154625440. Its totient is φ = 46349844480.

The previous prime is 68069971903. The next prime is 68069971961. The reversal of 68069971915 is 51917996086.

It is not a de Polignac number, because 68069971915 - 2¹³ = 68069963723 is a prime.

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, 3056641 + ... + 3078829.

It is an arithmetic number, because the mean of its divisors is an integer number (1982388030).

Almost surely, 2^68069971915 is an apocalyptic number.

68069971915 is a deficient number, since it is larger than the sum of its proper divisors (27084653525).

68069971915 is a wasteful number, since it uses less digits than its factorization.

68069971915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22432 (or 22415 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 61.

The spelling of 68069971915 in words is "sixty-eight billion, sixty-nine million, nine hundred seventy-one thousand, nine hundred fifteen".