70831117551 has 4 divisors (see below), whose sum is σ = 94441490072. Its totient is φ = 47220745032.

The previous prime is 70831117549. The next prime is 70831117589. The reversal of 70831117551 is 15571113807.

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

It is not a de Polignac number, because 70831117551 - 2¹ = 70831117549 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 (70831117501) 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, 11805186256 + ... + 11805186261.

It is an arithmetic number, because the mean of its divisors is an integer number (23610372518).

Almost surely, 2^70831117551 is an apocalyptic number.

70831117551 is a deficient number, since it is larger than the sum of its proper divisors (23610372521).

70831117551 is a wasteful number, since it uses less digits than its factorization.

70831117551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23610372520.

The product of its (nonzero) digits is 29400, while the sum is 39.

The spelling of 70831117551 in words is "seventy billion, eight hundred thirty-one million, one hundred seventeen thousand, five hundred fifty-one".