971163557789 has 8 divisors (see below), whose sum is σ = 989518083840. Its totient is φ = 952810168336.

The previous prime is 971163557783. The next prime is 971163557839. The reversal of 971163557789 is 987755361179.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 971163557789 - 2¹⁶ = 971163492253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971163557783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1551944 + ... + 2085870.

It is an arithmetic number, because the mean of its divisors is an integer number (123689760480).

Almost surely, 2^971163557789 is an apocalyptic number.

It is an amenable number.

971163557789 is a deficient number, since it is larger than the sum of its proper divisors (18354526051).

971163557789 is a wasteful number, since it uses less digits than its factorization.

971163557789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568299.

The product of its digits is 100018800, while the sum is 68.

The spelling of 971163557789 in words is "nine hundred seventy-one billion, one hundred sixty-three million, five hundred fifty-seven thousand, seven hundred eighty-nine".