70591777379 has 4 divisors (see below), whose sum is σ = 72868931520. Its totient is φ = 68314623240.

The previous prime is 70591777369. The next prime is 70591777387. The reversal of 70591777379 is 97377719507.

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-70591777379 is a prime.

It is a super-2 number, since 2×70591777379² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70591777349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1138577024 + ... + 1138577085.

It is an arithmetic number, because the mean of its divisors is an integer number (18217232880).

Almost surely, 2^70591777379 is an apocalyptic number.

70591777379 is a deficient number, since it is larger than the sum of its proper divisors (2277154141).

70591777379 is a wasteful number, since it uses less digits than its factorization.

70591777379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277154140.

The product of its (nonzero) digits is 20420505, while the sum is 62.

The spelling of 70591777379 in words is "seventy billion, five hundred ninety-one million, seven hundred seventy-seven thousand, three hundred seventy-nine".