2351506661 has 8 divisors (see below), whose sum is σ = 2752983744. Its totient is φ = 1966416480.

The previous prime is 2351506639. The next prime is 2351506667. The reversal of 2351506661 is 1666051532.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2351506661 - 2¹⁴ = 2351490277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2351506667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4096415 + ... + 4096988.

It is an arithmetic number, because the mean of its divisors is an integer number (344122968).

Almost surely, 2^2351506661 is an apocalyptic number.

It is an amenable number.

2351506661 is a deficient number, since it is larger than the sum of its proper divisors (401477083).

2351506661 is an equidigital number, since it uses as much as digits as its factorization.

2351506661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8193451.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 2351506661 is about 48492.3361058219. The cubic root of 2351506661 is about 1329.7869636357.

The spelling of 2351506661 in words is "two billion, three hundred fifty-one million, five hundred six thousand, six hundred sixty-one".