351145121343220 has 48 divisors (see below), whose sum is σ = 744060070142928. Its totient is φ = 139190802544640.

The previous prime is 351145121343139. The next prime is 351145121343253. The reversal of 351145121343220 is 22343121541153.

It can be written as a sum of positive squares in 8 ways, for example, as 56955458109456 + 294189663233764 = 7546884^2 + 17151958^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 351145121343220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 557299 + ... + 26506618.

It is an arithmetic number, because the mean of its divisors is an integer number (15501251461311).

Almost surely, 2^{351145121343220} is an apocalyptic number.

It is an amenable number.

351145121343220 is an abundant number, since it is smaller than the sum of its proper divisors (392914948799708).

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

351145121343220 is a wasteful number, since it uses less digits than its factorization.

351145121343220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27069780 (or 27069778 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 351145121343220 its reverse (22343121541153), we get a palindrome (373488242884373).

The spelling of 351145121343220 in words is "three hundred fifty-one trillion, one hundred forty-five billion, one hundred twenty-one million, three hundred forty-three thousand, two hundred twenty".