51636256305451 has 4 divisors (see below), whose sum is σ = 52343602282312. Its totient is φ = 50928910328592.

The previous prime is 51636256305437. The next prime is 51636256305461. The reversal of 51636256305451 is 15450365263615.

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 51636256305451 - 2²³ = 51636247916843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51636256305421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353672988321 + ... + 353672988466.

It is an arithmetic number, because the mean of its divisors is an integer number (13085900570578).

Almost surely, 2^{51636256305451} is an apocalyptic number.

51636256305451 is a deficient number, since it is larger than the sum of its proper divisors (707345976861).

51636256305451 is an equidigital number, since it uses as much as digits as its factorization.

51636256305451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707345976860.

The product of its (nonzero) digits is 9720000, while the sum is 52.

The spelling of 51636256305451 in words is "fifty-one trillion, six hundred thirty-six billion, two hundred fifty-six million, three hundred five thousand, four hundred fifty-one".