971530399474440 has 128 divisors (see below), whose sum is σ = 3169264216285440. Its totient is φ = 236824139160576.

The previous prime is 971530399474399. The next prime is 971530399474463. The reversal of 971530399474440 is 44474993035179.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3023023287 + ... + 3023344646.

It is an arithmetic number, because the mean of its divisors is an integer number (24759876689730).

Almost surely, 2^{971530399474440} is an apocalyptic number.

It is an amenable number.

971530399474440 is an abundant number, since it is smaller than the sum of its proper divisors (2197733816811000).

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

971530399474440 is a wasteful number, since it uses less digits than its factorization.

971530399474440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6046368063 (or 6046368059 counting only the distinct ones).

The product of its (nonzero) digits is 411505920, while the sum is 69.

The spelling of 971530399474440 in words is "nine hundred seventy-one trillion, five hundred thirty billion, three hundred ninety-nine million, four hundred seventy-four thousand, four hundred forty".