51005031313245 has 32 divisors (see below), whose sum is σ = 82592264754048. Its totient is φ = 26875583889408.

The previous prime is 51005031313241. The next prime is 51005031313279. The reversal of 51005031313245 is 54231313050015.

It is not a de Polignac number, because 51005031313245 - 2² = 51005031313241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51005031313241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29537419 + ... + 31216488.

It is an arithmetic number, because the mean of its divisors is an integer number (2581008273564).

Almost surely, 2^{51005031313245} is an apocalyptic number.

It is an amenable number.

51005031313245 is a deficient number, since it is larger than the sum of its proper divisors (31587233440803).

51005031313245 is a wasteful number, since it uses less digits than its factorization.

51005031313245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60754589.

The product of its (nonzero) digits is 27000, while the sum is 33.

The spelling of 51005031313245 in words is "fifty-one trillion, five billion, thirty-one million, three hundred thirteen thousand, two hundred forty-five".