355561165553 has 32 divisors (see below), whose sum is σ = 410824507392. Its totient is φ = 304574529600.

The previous prime is 355561165523. The next prime is 355561165643.

355561165553 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 355561165553 - 2¹⁶ = 355561100017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (355561165523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4941551 + ... + 5012987.

It is an arithmetic number, because the mean of its divisors is an integer number (12838265856).

Almost surely, 2^355561165553 is an apocalyptic number.

It is an amenable number.

355561165553 is a deficient number, since it is larger than the sum of its proper divisors (55263341839).

355561165553 is a wasteful number, since it uses less digits than its factorization.

355561165553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71765.

The product of its digits is 5062500, while the sum is 50.

The spelling of 355561165553 in words is "three hundred fifty-five billion, five hundred sixty-one million, one hundred sixty-five thousand, five hundred fifty-three".