397505011613 has 4 divisors (see below), whose sum is σ = 398182192800. Its totient is φ = 396827830428.

The previous prime is 397505011601. The next prime is 397505011637. The reversal of 397505011613 is 316110505793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 397505011613 - 2⁶ = 397505011549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397505010613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338589713 + ... + 338590886.

It is an arithmetic number, because the mean of its divisors is an integer number (99545548200).

Almost surely, 2^397505011613 is an apocalyptic number.

It is an amenable number.

397505011613 is a deficient number, since it is larger than the sum of its proper divisors (677181187).

397505011613 is an equidigital number, since it uses as much as digits as its factorization.

397505011613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677181186.

The product of its (nonzero) digits is 85050, while the sum is 41.

The spelling of 397505011613 in words is "three hundred ninety-seven billion, five hundred five million, eleven thousand, six hundred thirteen".