51241244012651 has 32 divisors (see below), whose sum is σ = 65104611383808. Its totient is φ = 39166427139840.

The previous prime is 51241244012639. The next prime is 51241244012681. The reversal of 51241244012651 is 15621044214215.

It is not a de Polignac number, because 51241244012651 - 2⁴² = 46843197501547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51241244012681) 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, 17595935 + ... + 20300231.

It is an arithmetic number, because the mean of its divisors is an integer number (2034519105744).

Almost surely, 2^{51241244012651} is an apocalyptic number.

51241244012651 is a deficient number, since it is larger than the sum of its proper divisors (13863367371157).

51241244012651 is a wasteful number, since it uses less digits than its factorization.

51241244012651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2709011.

The product of its (nonzero) digits is 76800, while the sum is 38.

Adding to 51241244012651 its reverse (15621044214215), we get a palindrome (66862288226866).

The spelling of 51241244012651 in words is "fifty-one trillion, two hundred forty-one billion, two hundred forty-four million, twelve thousand, six hundred fifty-one".