971530399474399 has 2 divisors, whose sum is σ = 971530399474400. Its totient is φ = 971530399474398.

The previous prime is 971530399474381. The next prime is 971530399474463. The reversal of 971530399474399 is 993474993035179.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 971530399474399 - 2²⁷ = 971530265256671 is a prime.

It is a super-2 number, since 2×971530399474399² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (971530399484399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485765199737199 + 485765199737200.

It is an arithmetic number, because the mean of its divisors is an integer number (485765199737200).

Almost surely, 2^{971530399474399} is an apocalyptic number.

971530399474399 is a deficient number, since it is larger than the sum of its proper divisors (1).

971530399474399 is an equidigital number, since it uses as much as digits as its factorization.

971530399474399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6249746160, while the sum is 82.

The spelling of 971530399474399 in words is "nine hundred seventy-one trillion, five hundred thirty billion, three hundred ninety-nine million, four hundred seventy-four thousand, three hundred ninety-nine".