70551596891 has 2 divisors, whose sum is σ = 70551596892. Its totient is φ = 70551596890.

The previous prime is 70551596887. The next prime is 70551596909. The reversal of 70551596891 is 19869515507.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70551596891 - 2² = 70551596887 is a prime.

It is not a weakly prime, because it can be changed into another prime (70551596851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35275798445 + 35275798446.

It is an arithmetic number, because the mean of its divisors is an integer number (35275798446).

Almost surely, 2^70551596891 is an apocalyptic number.

70551596891 is a deficient number, since it is larger than the sum of its proper divisors (1).

70551596891 is an equidigital number, since it uses as much as digits as its factorization.

70551596891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402000, while the sum is 56.

The spelling of 70551596891 in words is "seventy billion, five hundred fifty-one million, five hundred ninety-six thousand, eight hundred ninety-one".