51244553469751 has 4 divisors (see below), whose sum is σ = 51314464184632. Its totient is φ = 51174642754872.

The previous prime is 51244553469713. The next prime is 51244553469761. The reversal of 51244553469751 is 15796435544215.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51244553469751 - 2²³ = 51244545081143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51244553469751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51244553469761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34955356341 + ... + 34955357806.

It is an arithmetic number, because the mean of its divisors is an integer number (12828616046158).

Almost surely, 2^{51244553469751} is an apocalyptic number.

51244553469751 is a deficient number, since it is larger than the sum of its proper divisors (69910714881).

51244553469751 is an equidigital number, since it uses as much as digits as its factorization.

51244553469751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69910714880.

The product of its digits is 90720000, while the sum is 61.

The spelling of 51244553469751 in words is "fifty-one trillion, two hundred forty-four billion, five hundred fifty-three million, four hundred sixty-nine thousand, seven hundred fifty-one".