51399055135 has 16 divisors (see below), whose sum is σ = 62262276480. Its totient is φ = 40730744320.

The previous prime is 51399055133. The next prime is 51399055139. The reversal of 51399055135 is 53155099315.

It is not a de Polignac number, because 51399055135 - 2¹ = 51399055133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51399055133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 938970 + ... + 992200.

It is an arithmetic number, because the mean of its divisors is an integer number (3891392280).

Almost surely, 2^51399055135 is an apocalyptic number.

51399055135 is a deficient number, since it is larger than the sum of its proper divisors (10863221345).

51399055135 is a wasteful number, since it uses less digits than its factorization.

51399055135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55058.

The product of its (nonzero) digits is 455625, while the sum is 46.

The spelling of 51399055135 in words is "fifty-one billion, three hundred ninety-nine million, fifty-five thousand, one hundred thirty-five".