971621435732 has 6 divisors (see below), whose sum is σ = 1700337512538. Its totient is φ = 485810717864.

The previous prime is 971621435723. The next prime is 971621435747. The reversal of 971621435732 is 237534126179.

It can be written as a sum of positive squares in only one way, i.e., 675874717456 + 295746718276 = 822116^2 + 543826^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121452679463 + ... + 121452679470.

It is an arithmetic number, because the mean of its divisors is an integer number (283389585423).

Almost surely, 2^971621435732 is an apocalyptic number.

It is an amenable number.

971621435732 is a deficient number, since it is larger than the sum of its proper divisors (728716076806).

971621435732 is a wasteful number, since it uses less digits than its factorization.

971621435732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242905358937 (or 242905358935 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 50.

The spelling of 971621435732 in words is "nine hundred seventy-one billion, six hundred twenty-one million, four hundred thirty-five thousand, seven hundred thirty-two".