2351661264015 has 32 divisors (see below), whose sum is σ = 4302989630976. Its totient is φ = 1074342890880.

The previous prime is 2351661264013. The next prime is 2351661264019. The reversal of 2351661264015 is 5104621661532.

It is not a de Polignac number, because 2351661264015 - 2¹ = 2351661264013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2351661264011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7153672 + ... + 7475181.

It is an arithmetic number, because the mean of its divisors is an integer number (134468425968).

Almost surely, 2^{2351661264015} is an apocalyptic number.

2351661264015 is a deficient number, since it is larger than the sum of its proper divisors (1951328366961).

2351661264015 is a wasteful number, since it uses less digits than its factorization.

2351661264015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14630399.

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 2351661264015 in words is "two trillion, three hundred fifty-one billion, six hundred sixty-one million, two hundred sixty-four thousand, fifteen".