68151711391 has 8 divisors (see below), whose sum is σ = 69444454464. Its totient is φ = 66859222560.

The previous prime is 68151711371. The next prime is 68151711421. The reversal of 68151711391 is 19311715186.

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 68151711391 - 2⁵ = 68151711359 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 (68151711371) 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, 529621 + ... + 645601.

It is an arithmetic number, because the mean of its divisors is an integer number (8680556808).

Almost surely, 2^68151711391 is an apocalyptic number.

68151711391 is a deficient number, since it is larger than the sum of its proper divisors (1292743073).

68151711391 is a wasteful number, since it uses less digits than its factorization.

68151711391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127121.

The product of its digits is 45360, while the sum is 43.

The spelling of 68151711391 in words is "sixty-eight billion, one hundred fifty-one million, seven hundred eleven thousand, three hundred ninety-one".