397736532651 has 8 divisors (see below), whose sum is σ = 531082840384. Its totient is φ = 264773956680.

The previous prime is 397736532637. The next prime is 397736532709. The reversal of 397736532651 is 156235637793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 397736532651 - 2⁵ = 397736532619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 397736532591 and 397736532600.

It is not an unprimeable number, because it can be changed into a prime (397736582651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95930521 + ... + 95934666.

It is an arithmetic number, because the mean of its divisors is an integer number (66385355048).

Almost surely, 2^397736532651 is an apocalyptic number.

397736532651 is a deficient number, since it is larger than the sum of its proper divisors (133346307733).

397736532651 is a wasteful number, since it uses less digits than its factorization.

397736532651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191865881.

The product of its digits is 21432600, while the sum is 57.

The spelling of 397736532651 in words is "three hundred ninety-seven billion, seven hundred thirty-six million, five hundred thirty-two thousand, six hundred fifty-one".