51214342545 has 48 divisors (see below), whose sum is σ = 94047288192. Its totient is φ = 25692848640.

The previous prime is 51214342537. The next prime is 51214342549. The reversal of 51214342545 is 54524341215.

51214342545 is a `hidden beast` number, since 51 + 2 + 143 + 425 + 45 = 666.

It is not a de Polignac number, because 51214342545 - 2³ = 51214342537 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51214342549) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1382434 + ... + 1418996.

It is an arithmetic number, because the mean of its divisors is an integer number (1959318504).

Almost surely, 2^51214342545 is an apocalyptic number.

It is an amenable number.

51214342545 is a deficient number, since it is larger than the sum of its proper divisors (42832945647).

51214342545 is a wasteful number, since it uses less digits than its factorization.

51214342545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38422 (or 38419 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

The spelling of 51214342545 in words is "fifty-one billion, two hundred fourteen million, three hundred forty-two thousand, five hundred forty-five".