353865557956 has 27 divisors (see below), whose sum is σ = 622052539983. Its totient is φ = 176139822600.

The previous prime is 353865557921. The next prime is 353865557971. The reversal of 353865557956 is 659755568353.

It is a happy number.

The square root of 353865557956 is 594866.

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

It is a super-2 number, since 2×353865557956² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 353865557891 and 353865557900.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 336693631 + ... + 336694681.

Almost surely, 2^353865557956 is an apocalyptic number.

353865557956 is the 594866-th square number.

It is an amenable number.

353865557956 is a deficient number, since it is larger than the sum of its proper divisors (268186982027).

353865557956 is an frugal number, since it uses more digits than its factorization.

353865557956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2672 (or 1336 counting only the distinct ones).

The product of its digits is 510300000, while the sum is 67.

The spelling of 353865557956 in words is "three hundred fifty-three billion, eight hundred sixty-five million, five hundred fifty-seven thousand, nine hundred fifty-six".