70788664897 has 4 divisors (see below), whose sum is σ = 73866432960. Its totient is φ = 67710896836.

The previous prime is 70788664829. The next prime is 70788664909. The reversal of 70788664897 is 79846688707.

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 not a de Polignac number, because 70788664897 - 2¹⁵ = 70788632129 is a prime.

It is a super-2 number, since 2×70788664897² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70788665897) 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, 1538883997 + ... + 1538884042.

It is an arithmetic number, because the mean of its divisors is an integer number (18466608240).

Almost surely, 2^70788664897 is an apocalyptic number.

It is an amenable number.

70788664897 is a deficient number, since it is larger than the sum of its proper divisors (3077768063).

70788664897 is a wasteful number, since it uses less digits than its factorization.

70788664897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3077768062.

The product of its (nonzero) digits is 227598336, while the sum is 70.

It can be divided in two parts, 7078866489 and 7, that added together give a square (7078866496 = 84136²).

The spelling of 70788664897 in words is "seventy billion, seven hundred eighty-eight million, six hundred sixty-four thousand, eight hundred ninety-seven".