70779877707 has 48 divisors (see below), whose sum is σ = 118714991360. Its totient is φ = 36718038720.

The previous prime is 70779877703. The next prime is 70779877709. The reversal of 70779877707 is 70777897707.

It is not a de Polignac number, because 70779877707 - 2² = 70779877703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70779877703) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1858953 + ... + 1896645.

Almost surely, 2^70779877707 is an apocalyptic number.

70779877707 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

70779877707 is a deficient number, since it is larger than the sum of its proper divisors (47935113653).

70779877707 is a wasteful number, since it uses less digits than its factorization.

70779877707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38464 (or 38453 counting only the distinct ones).

The product of its (nonzero) digits is 59295096, while the sum is 66.

The spelling of 70779877707 in words is "seventy billion, seven hundred seventy-nine million, eight hundred seventy-seven thousand, seven hundred seven".