70047313261 has 4 divisors (see below), whose sum is σ = 70057148832. Its totient is φ = 70037477692.

The previous prime is 70047313201. The next prime is 70047313277. The reversal of 70047313261 is 16231374007.

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 a de Polignac number, because none of the positive numbers 2^k-70047313261 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 (70047313201) 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, 4907095 + ... + 4921348.

It is an arithmetic number, because the mean of its divisors is an integer number (17514287208).

Almost surely, 2^70047313261 is an apocalyptic number.

It is an amenable number.

70047313261 is a deficient number, since it is larger than the sum of its proper divisors (9835571).

70047313261 is an equidigital number, since it uses as much as digits as its factorization.

70047313261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9835570.

The product of its (nonzero) digits is 21168, while the sum is 34.

Adding to 70047313261 its reverse (16231374007), we get a palindrome (86278687268).

The spelling of 70047313261 in words is "seventy billion, forty-seven million, three hundred thirteen thousand, two hundred sixty-one".