351552635561 has 4 divisors (see below), whose sum is σ = 351597616212. Its totient is φ = 351507654912.

The previous prime is 351552635543. The next prime is 351552635587. The reversal of 351552635561 is 165536255153.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 132673691536 + 218878944025 = 364244^2 + 467845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-351552635561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (351552635501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22478600 + ... + 22494233.

It is an arithmetic number, because the mean of its divisors is an integer number (87899404053).

Almost surely, 2^351552635561 is an apocalyptic number.

It is an amenable number.

351552635561 is a deficient number, since it is larger than the sum of its proper divisors (44980651).

351552635561 is an equidigital number, since it uses as much as digits as its factorization.

351552635561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44980650.

The product of its digits is 2025000, while the sum is 47.

The spelling of 351552635561 in words is "three hundred fifty-one billion, five hundred fifty-two million, six hundred thirty-five thousand, five hundred sixty-one".