355874478553 has 8 divisors (see below), whose sum is σ = 391435190496. Its totient is φ = 323522252020.

The previous prime is 355874478517. The next prime is 355874478581.

It is a happy number.

355874478553 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 355874478553 - 2⁹ = 355874478041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (355874478353) 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, 133685551 + ... + 133688212.

It is an arithmetic number, because the mean of its divisors is an integer number (48929398812).

Almost surely, 2^355874478553 is an apocalyptic number.

It is an amenable number.

355874478553 is a deficient number, since it is larger than the sum of its proper divisors (35560711943).

355874478553 is an equidigital number, since it uses as much as digits as its factorization.

355874478553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267373796 (or 267373774 counting only the distinct ones).

The product of its digits is 282240000, while the sum is 64.

The spelling of 355874478553 in words is "three hundred fifty-five billion, eight hundred seventy-four million, four hundred seventy-eight thousand, five hundred fifty-three".