70739727457 has 4 divisors (see below), whose sum is σ = 80845402816. Its totient is φ = 60634052100.

The previous prime is 70739727451. The next prime is 70739727533. The reversal of 70739727457 is 75472793707.

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 70739727457 - 2¹¹ = 70739725409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70739727451) 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, 5052837669 + ... + 5052837682.

It is an arithmetic number, because the mean of its divisors is an integer number (20211350704).

Almost surely, 2^70739727457 is an apocalyptic number.

It is an amenable number.

70739727457 is a deficient number, since it is larger than the sum of its proper divisors (10105675359).

70739727457 is a wasteful number, since it uses less digits than its factorization.

70739727457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10105675358.

The product of its (nonzero) digits is 18151560, while the sum is 58.

The spelling of 70739727457 in words is "seventy billion, seven hundred thirty-nine million, seven hundred twenty-seven thousand, four hundred fifty-seven".