70065163731 has 4 divisors (see below), whose sum is σ = 93420218312. Its totient is φ = 46710109152.

The previous prime is 70065163709. The next prime is 70065163739. The reversal of 70065163731 is 13736156007.

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

It is not a de Polignac number, because 70065163731 - 2¹³ = 70065155539 is a prime.

It is a super-2 number, since 2×70065163731² (a number of 22 digits) contains 22 as substring.

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 70065163731.

It is not an unprimeable number, because it can be changed into a prime (70065163739) 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, 11677527286 + ... + 11677527291.

It is an arithmetic number, because the mean of its divisors is an integer number (23355054578).

Almost surely, 2^70065163731 is an apocalyptic number.

70065163731 is a deficient number, since it is larger than the sum of its proper divisors (23355054581).

70065163731 is a wasteful number, since it uses less digits than its factorization.

70065163731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23355054580.

The product of its (nonzero) digits is 79380, while the sum is 39.

The spelling of 70065163731 in words is "seventy billion, sixty-five million, one hundred sixty-three thousand, seven hundred thirty-one".