51556374337 has 8 divisors (see below), whose sum is σ = 55524899304. Its totient is φ = 47588227968.

The previous prime is 51556374323. The next prime is 51556374343. The reversal of 51556374337 is 73347365515.

51556374337 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 11029041 + 51545345296 = 3321^2 + 227036^2 .

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 51556374337 - 2³⁵ = 17196635969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51556374347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229263 + ... + 394555.

It is an arithmetic number, because the mean of its divisors is an integer number (6940612413).

Almost surely, 2^51556374337 is an apocalyptic number.

It is an amenable number.

51556374337 is a deficient number, since it is larger than the sum of its proper divisors (3968524967).

51556374337 is a wasteful number, since it uses less digits than its factorization.

51556374337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189299.

The product of its digits is 3969000, while the sum is 49.

The spelling of 51556374337 in words is "fifty-one billion, five hundred fifty-six million, three hundred seventy-four thousand, three hundred thirty-seven".