51346713599 has 4 divisors (see below), whose sum is σ = 53117289960. Its totient is φ = 49576137240.

The previous prime is 51346713559. The next prime is 51346713641. The reversal of 51346713599 is 99531764315.

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 51346713599 - 2¹² = 51346709503 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 51346713599.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51346713559) 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, 885288137 + ... + 885288194.

It is an arithmetic number, because the mean of its divisors is an integer number (13279322490).

Almost surely, 2^51346713599 is an apocalyptic number.

51346713599 is a deficient number, since it is larger than the sum of its proper divisors (1770576361).

51346713599 is a wasteful number, since it uses less digits than its factorization.

51346713599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770576360.

The product of its digits is 3061800, while the sum is 53.

The spelling of 51346713599 in words is "fifty-one billion, three hundred forty-six million, seven hundred thirteen thousand, five hundred ninety-nine".