971591362559 has 4 divisors (see below), whose sum is σ = 973717383504. Its totient is φ = 969465341616.

The previous prime is 971591362549. The next prime is 971591362571. The reversal of 971591362559 is 955263195179.

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

It is a cyclic number.

It is not a de Polignac number, because 971591362559 - 2⁴ = 971591362543 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 (971591362549) 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, 1063009787 + ... + 1063010700.

It is an arithmetic number, because the mean of its divisors is an integer number (243429345876).

Almost surely, 2^971591362559 is an apocalyptic number.

971591362559 is a deficient number, since it is larger than the sum of its proper divisors (2126020945).

971591362559 is a wasteful number, since it uses less digits than its factorization.

971591362559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126020944.

The product of its digits is 22963500, while the sum is 62.

The spelling of 971591362559 in words is "nine hundred seventy-one billion, five hundred ninety-one million, three hundred sixty-two thousand, five hundred fifty-nine".