351145434022420 has 12 divisors (see below), whose sum is σ = 737405411447124. Its totient is φ = 140458173608960.

The previous prime is 351145434022381. The next prime is 351145434022477. The reversal of 351145434022420 is 24220434541153.

It can be written as a sum of positive squares in 2 ways, for example, as 151926775436164 + 199218658586256 = 12325858^2 + 14114484^2 .

It is a super-2 number, since 2×351145434022420² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8778635850541 + ... + 8778635850580.

It is an arithmetic number, because the mean of its divisors is an integer number (61450450953927).

Almost surely, 2^{351145434022420} is an apocalyptic number.

It is an amenable number.

351145434022420 is an abundant number, since it is smaller than the sum of its proper divisors (386259977424704).

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

351145434022420 is a wasteful number, since it uses less digits than its factorization.

351145434022420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17557271701130 (or 17557271701128 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 40.

Adding to 351145434022420 its reverse (24220434541153), we get a palindrome (375365868563573).

The spelling of 351145434022420 in words is "three hundred fifty-one trillion, one hundred forty-five billion, four hundred thirty-four million, twenty-two thousand, four hundred twenty".