354220571073656 has 32 divisors (see below), whose sum is σ = 759101686163040. Its totient is φ = 151797295116288.

The previous prime is 354220571073613. The next prime is 354220571073659. The reversal of 354220571073656 is 656370175022453.

It is a super-3 number, since 3×354220571073656³ (a number of 45 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354220571073659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239277545 + ... + 240753368.

It is an arithmetic number, because the mean of its divisors is an integer number (23721927692595).

Almost surely, 2^{354220571073656} is an apocalyptic number.

It is an amenable number.

354220571073656 is an abundant number, since it is smaller than the sum of its proper divisors (404881115089384).

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

354220571073656 is a wasteful number, since it uses less digits than its factorization.

354220571073656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480044103 (or 480044099 counting only the distinct ones).

The product of its (nonzero) digits is 31752000, while the sum is 56.

The spelling of 354220571073656 in words is "three hundred fifty-four trillion, two hundred twenty billion, five hundred seventy-one million, seventy-three thousand, six hundred fifty-six".