70841081257 has 4 divisors (see below), whose sum is σ = 71898410896. Its totient is φ = 69783751620.

The previous prime is 70841081237. The next prime is 70841081273. The reversal of 70841081257 is 75218014807.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 70841081257 - 2²⁷ = 70706863529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70841081237) 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, 528664719 + ... + 528664852.

It is an arithmetic number, because the mean of its divisors is an integer number (17974602724).

Almost surely, 2^70841081257 is an apocalyptic number.

It is an amenable number.

70841081257 is a deficient number, since it is larger than the sum of its proper divisors (1057329639).

70841081257 is a wasteful number, since it uses less digits than its factorization.

70841081257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057329638.

The product of its (nonzero) digits is 125440, while the sum is 43.

The spelling of 70841081257 in words is "seventy billion, eight hundred forty-one million, eighty-one thousand, two hundred fifty-seven".