971620961924 has 12 divisors (see below), whose sum is σ = 1717171700748. Its totient is φ = 481000476000.

The previous prime is 971620961917. The next prime is 971620961933. The reversal of 971620961924 is 429169026179.

It can be written as a sum of positive squares in 2 ways, for example, as 548535759424 + 423085202500 = 740632^2 + 650450^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 971620961924.

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, 1202500787 + ... + 1202501594.

It is an arithmetic number, because the mean of its divisors is an integer number (143097641729).

Almost surely, 2^971620961924 is an apocalyptic number.

It is an amenable number.

971620961924 is a deficient number, since it is larger than the sum of its proper divisors (745550738824).

971620961924 is a wasteful number, since it uses less digits than its factorization.

971620961924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405002486 (or 2405002484 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 56.

The spelling of 971620961924 in words is "nine hundred seventy-one billion, six hundred twenty million, nine hundred sixty-one thousand, nine hundred twenty-four".