70779848507 has 4 divisors (see below), whose sum is σ = 70794190056. Its totient is φ = 70765506960.

The previous prime is 70779848459. The next prime is 70779848539. The reversal of 70779848507 is 70584897707.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70779848507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70779848507.

It is not an unprimeable number, because it can be changed into a prime (70779848807) 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, 7163369 + ... + 7173242.

It is an arithmetic number, because the mean of its divisors is an integer number (17698547514).

Almost surely, 2^70779848507 is an apocalyptic number.

70779848507 is a deficient number, since it is larger than the sum of its proper divisors (14341549).

70779848507 is a wasteful number, since it uses less digits than its factorization.

70779848507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14341548.

The product of its (nonzero) digits is 27659520, while the sum is 62.

The spelling of 70779848507 in words is "seventy billion, seven hundred seventy-nine million, eight hundred forty-eight thousand, five hundred seven".