351151145515521 has 48 divisors (see below), whose sum is σ = 574987265798400. Its totient is φ = 204718651554816.

The previous prime is 351151145515493. The next prime is 351151145515561. The reversal of 351151145515521 is 125515541151153.

351151145515521 is a `hidden beast` number, since 3 + 5 + 1 + 1 + 5 + 1 + 1 + 45 + 51 + 552 + 1 = 666.

It is not a de Polignac number, because 351151145515521 - 2²² = 351151141321217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (351151145515561) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 747224401 + ... + 747694193.

It is an arithmetic number, because the mean of its divisors is an integer number (11978901370800).

Almost surely, 2^{351151145515521} is an apocalyptic number.

It is an amenable number.

351151145515521 is a deficient number, since it is larger than the sum of its proper divisors (223836120282879).

351151145515521 is a wasteful number, since it uses less digits than its factorization.

351151145515521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806070 (or 806067 counting only the distinct ones).

The product of its digits is 375000, while the sum is 45.

Adding to 351151145515521 its reverse (125515541151153), we get a palindrome (476666686666674).

The spelling of 351151145515521 in words is "three hundred fifty-one trillion, one hundred fifty-one billion, one hundred forty-five million, five hundred fifteen thousand, five hundred twenty-one".