397553565355794 has 24 divisors (see below), whose sum is σ = 884646222009420. Its totient is φ = 128936291466528.

The previous prime is 397553565355787. The next prime is 397553565355861. The reversal of 397553565355794 is 497553565355793.

397553565355794 is a `hidden beast` number, since 3 + 9 + 7 + 5 + 5 + 3 + 5 + 6 + 5 + 35 + 579 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 388069709265225 + 9483856090569 = 19699485^2 + 3079587^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 298463636989 + ... + 298463638320.

Almost surely, 2^{397553565355794} is an apocalyptic number.

397553565355794 is an abundant number, since it is smaller than the sum of its proper divisors (487092656653626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

397553565355794 is a wasteful number, since it uses less digits than its factorization.

397553565355794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596927275354 (or 596927275351 counting only the distinct ones).

The product of its digits is 40186125000, while the sum is 81.

Subtracting 397553565355794 from its reverse (497553565355793), we obtain a palindrome (99999999999999).

The spelling of 397553565355794 in words is "three hundred ninety-seven trillion, five hundred fifty-three billion, five hundred sixty-five million, three hundred fifty-five thousand, seven hundred ninety-four".