355145223251 has 24 divisors (see below), whose sum is σ = 445180291920. Its totient is φ = 280821546432.

The previous prime is 355145223247. The next prime is 355145223253. The reversal of 355145223251 is 152322541553.

It is not a de Polignac number, because 355145223251 - 2² = 355145223247 is a prime.

It is a super-2 number, since 2×355145223251² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (355145223253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 872480 + ... + 1213058.

It is an arithmetic number, because the mean of its divisors is an integer number (18549178830).

Almost surely, 2^355145223251 is an apocalyptic number.

355145223251 is a deficient number, since it is larger than the sum of its proper divisors (90035068669).

355145223251 is a wasteful number, since it uses less digits than its factorization.

355145223251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342243 (or 342236 counting only the distinct ones).

The product of its digits is 180000, while the sum is 38.

The spelling of 355145223251 in words is "three hundred fifty-five billion, one hundred forty-five million, two hundred twenty-three thousand, two hundred fifty-one".