70909156634 has 4 divisors (see below), whose sum is σ = 106363734954. Its totient is φ = 35454578316.

The previous prime is 70909156631. The next prime is 70909156679. The reversal of 70909156634 is 43665190907.

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

It can be written as a sum of positive squares in only one way, i.e., 52373695609 + 18535461025 = 228853^2 + 136145^2 .

It is not an unprimeable number, because it can be changed into a prime (70909156631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17727289157 + ... + 17727289160.

Almost surely, 2^70909156634 is an apocalyptic number.

70909156634 is a deficient number, since it is larger than the sum of its proper divisors (35454578320).

70909156634 is a wasteful number, since it uses less digits than its factorization.

70909156634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35454578319.

The product of its (nonzero) digits is 1224720, while the sum is 50.

The spelling of 70909156634 in words is "seventy billion, nine hundred nine million, one hundred fifty-six thousand, six hundred thirty-four".