971515205488 has 20 divisors (see below), whose sum is σ = 1993034870640. Its totient is φ = 457183625984.

The previous prime is 971515205473. The next prime is 971515205527. The reversal of 971515205488 is 884502515179.

It is a congruent number.

It is an unprimeable number.

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, 1785873268 + ... + 1785873811.

It is an arithmetic number, because the mean of its divisors is an integer number (99651743532).

Almost surely, 2^971515205488 is an apocalyptic number.

It is an amenable number.

971515205488 is an abundant number, since it is smaller than the sum of its proper divisors (1021519665152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

971515205488 is a wasteful number, since it uses less digits than its factorization.

971515205488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3571747104 (or 3571747098 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 55.

The spelling of 971515205488 in words is "nine hundred seventy-one billion, five hundred fifteen million, two hundred five thousand, four hundred eighty-eight".