397053685554436 has 81 divisors (see below), whose sum is σ = 705201392151711. Its totient is φ = 195610941422208.

The previous prime is 397053685554433. The next prime is 397053685554479. The reversal of 397053685554436 is 634455586350793.

The square root of 397053685554436 is 19926206.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 13455764604100 + 383597920950336 = 3668210^2 + 19585656^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397053685554431) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1268542126216 + ... + 1268542126528.

Almost surely, 2^{397053685554436} is an apocalyptic number.

397053685554436 is the 19926206-th square number.

It is an amenable number.

397053685554436 is a deficient number, since it is larger than the sum of its proper divisors (308147706597275).

397053685554436 is an frugal number, since it uses more digits than its factorization.

397053685554436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366 (or 683 counting only the distinct ones).

The product of its (nonzero) digits is 4898880000, while the sum is 73.

The spelling of 397053685554436 in words is "three hundred ninety-seven trillion, fifty-three billion, six hundred eighty-five million, five hundred fifty-four thousand, four hundred thirty-six".