51665501201115 has 32 divisors (see below), whose sum is σ = 85515812712000. Its totient is φ = 26604608163840.

The previous prime is 51665501201101. The next prime is 51665501201131. The reversal of 51665501201115 is 51110210556615.

It is not a de Polignac number, because 51665501201115 - 2⁷ = 51665501200987 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131630355 + ... + 132022275.

It is an arithmetic number, because the mean of its divisors is an integer number (2672369147250).

Almost surely, 2^{51665501201115} is an apocalyptic number.

51665501201115 is a deficient number, since it is larger than the sum of its proper divisors (33850311510885).

51665501201115 is a wasteful number, since it uses less digits than its factorization.

51665501201115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695007.

The product of its (nonzero) digits is 45000, while the sum is 39.

The spelling of 51665501201115 in words is "fifty-one trillion, six hundred sixty-five billion, five hundred one million, two hundred one thousand, one hundred fifteen".