971372671487 has 4 divisors (see below), whose sum is σ = 1028512240416. Its totient is φ = 914233102560.

The previous prime is 971372671483. The next prime is 971372671513. The reversal of 971372671487 is 784176273179.

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 971372671487 - 2² = 971372671483 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 (971372671481) 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, 28569784439 + ... + 28569784472.

It is an arithmetic number, because the mean of its divisors is an integer number (257128060104).

Almost surely, 2^971372671487 is an apocalyptic number.

971372671487 is a deficient number, since it is larger than the sum of its proper divisors (57139568929).

971372671487 is a wasteful number, since it uses less digits than its factorization.

971372671487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57139568928.

The product of its digits is 24893568, while the sum is 62.

The spelling of 971372671487 in words is "nine hundred seventy-one billion, three hundred seventy-two million, six hundred seventy-one thousand, four hundred eighty-seven".