51344767501 has 2 divisors, whose sum is σ = 51344767502. Its totient is φ = 51344767500.

The previous prime is 51344767499. The next prime is 51344767519. The reversal of 51344767501 is 10576744315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49696001476 + 1648766025 = 222926^2 + 40605^2 .

It is a cyclic number.

It is not a de Polignac number, because 51344767501 - 2¹ = 51344767499 is a prime.

Together with 51344767499, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51344767601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25672383750 + 25672383751.

It is an arithmetic number, because the mean of its divisors is an integer number (25672383751).

Almost surely, 2^51344767501 is an apocalyptic number.

It is an amenable number.

51344767501 is a deficient number, since it is larger than the sum of its proper divisors (1).

51344767501 is an equidigital number, since it uses as much as digits as its factorization.

51344767501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 51344767501 in words is "fifty-one billion, three hundred forty-four million, seven hundred sixty-seven thousand, five hundred one".