51496784367877 has 8 divisors (see below), whose sum is σ = 51946732499480. Its totient is φ = 51048654209280.

The previous prime is 51496784367863. The next prime is 51496784367911. The reversal of 51496784367877 is 77876348769415.

It is a Cunningham number, because it is equal to 7176126²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 328528434276 + 51168255933601 = 573174^2 + 7153199^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51496784367877 - 2¹⁵ = 51496784335109 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 51496784367877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51496784367577) 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 7 ways as a sum of consecutive naturals, for example, 454436352 + ... + 454549657.

It is an arithmetic number, because the mean of its divisors is an integer number (6493341562435).

Almost surely, 2^{51496784367877} is an apocalyptic number.

It is an amenable number.

51496784367877 is a deficient number, since it is larger than the sum of its proper divisors (449948131603).

51496784367877 is a wasteful number, since it uses less digits than its factorization.

51496784367877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908986503.

The product of its digits is 11948912640, while the sum is 82.

The spelling of 51496784367877 in words is "fifty-one trillion, four hundred ninety-six billion, seven hundred eighty-four million, three hundred sixty-seven thousand, eight hundred seventy-seven".