970785658721 has 4 divisors (see below), whose sum is σ = 970788403200. Its totient is φ = 970782914244.

The previous prime is 970785658639. The next prime is 970785658751. The reversal of 970785658721 is 127856587079.

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 a de Polignac number, because none of the positive numbers 2^k-970785658721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (970785658751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 746561 + ... + 1580798.

It is an arithmetic number, because the mean of its divisors is an integer number (242697100800).

Almost surely, 2^970785658721 is an apocalyptic number.

It is an amenable number.

970785658721 is a deficient number, since it is larger than the sum of its proper divisors (2744479).

970785658721 is a wasteful number, since it uses less digits than its factorization.

970785658721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2744478.

The product of its (nonzero) digits is 59270400, while the sum is 65.

The spelling of 970785658721 in words is "nine hundred seventy billion, seven hundred eighty-five million, six hundred fifty-eight thousand, seven hundred twenty-one".