354820745253 has 36 divisors (see below), whose sum is σ = 514496084928. Its totient is φ = 217410130080.

The previous prime is 354820745249. The next prime is 354820745261. The reversal of 354820745253 is 352547028453.

It is not a de Polignac number, because 354820745253 - 2² = 354820745249 is a prime.

It is a super-2 number, since 2×354820745253² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354820745203) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 220796176 + ... + 220797782.

Almost surely, 2^354820745253 is an apocalyptic number.

It is an amenable number.

354820745253 is a deficient number, since it is larger than the sum of its proper divisors (159675339675).

354820745253 is an equidigital number, since it uses as much as digits as its factorization.

354820745253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3514 (or 1894 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 48.

The spelling of 354820745253 in words is "three hundred fifty-four billion, eight hundred twenty million, seven hundred forty-five thousand, two hundred fifty-three".