51274893599 has 4 divisors (see below), whose sum is σ = 51277120440. Its totient is φ = 51272666760.

The previous prime is 51274893559. The next prime is 51274893667. The reversal of 51274893599 is 99539847215.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99539847215 = 5 ⋅19907969443.

It is a cyclic number.

It is not a de Polignac number, because 51274893599 - 2¹² = 51274889503 is a prime.

It is a super-2 number, since 2×51274893599² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51274893539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1078517 + ... + 1125054.

It is an arithmetic number, because the mean of its divisors is an integer number (12819280110).

Almost surely, 2^51274893599 is an apocalyptic number.

51274893599 is a deficient number, since it is larger than the sum of its proper divisors (2226841).

51274893599 is a wasteful number, since it uses less digits than its factorization.

51274893599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226840.

The product of its digits is 24494400, while the sum is 62.

The spelling of 51274893599 in words is "fifty-one billion, two hundred seventy-four million, eight hundred ninety-three thousand, five hundred ninety-nine".