351075570661 has 4 divisors (see below), whose sum is σ = 351110896524. Its totient is φ = 351040244800.

The previous prime is 351075570631. The next prime is 351075570673. The reversal of 351075570661 is 166075570153.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166075570153 = 79 ⋅2102222407.

It can be written as a sum of positive squares in 2 ways, for example, as 83275530625 + 267800040036 = 288575^2 + 517494^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-351075570661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351075570631) 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, 17648020 + ... + 17667901.

It is an arithmetic number, because the mean of its divisors is an integer number (87777724131).

Almost surely, 2^351075570661 is an apocalyptic number.

It is an amenable number.

351075570661 is a deficient number, since it is larger than the sum of its proper divisors (35325863).

351075570661 is an equidigital number, since it uses as much as digits as its factorization.

351075570661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35325862.

The product of its (nonzero) digits is 661500, while the sum is 46.

The spelling of 351075570661 in words is "three hundred fifty-one billion, seventy-five million, five hundred seventy thousand, six hundred sixty-one".