70767465991 has 4 divisors (see below), whose sum is σ = 70776887832. Its totient is φ = 70758044152.

The previous prime is 70767465959. The next prime is 70767465997. The reversal of 70767465991 is 19956476707.

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

It is a cyclic number.

It is not a de Polignac number, because 70767465991 - 2⁵ = 70767465959 is a prime.

It is a super-2 number, since 2×70767465991² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70767465997) 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, 4699645 + ... + 4714678.

It is an arithmetic number, because the mean of its divisors is an integer number (17694221958).

Almost surely, 2^70767465991 is an apocalyptic number.

70767465991 is a deficient number, since it is larger than the sum of its proper divisors (9421841).

70767465991 is an equidigital number, since it uses as much as digits as its factorization.

70767465991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9421840.

The product of its (nonzero) digits is 20003760, while the sum is 61.

The spelling of 70767465991 in words is "seventy billion, seven hundred sixty-seven million, four hundred sixty-five thousand, nine hundred ninety-one".