51011330245 has 16 divisors (see below), whose sum is σ = 68225682240. Its totient is φ = 36387028224.

The previous prime is 51011330231. The next prime is 51011330263. The reversal of 51011330245 is 54203311015.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51011330245 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15791367 + ... + 15794596.

It is an arithmetic number, because the mean of its divisors is an integer number (4264105140).

Almost surely, 2^51011330245 is an apocalyptic number.

It is an amenable number.

51011330245 is a deficient number, since it is larger than the sum of its proper divisors (17214351995).

51011330245 is a wasteful number, since it uses less digits than its factorization.

51011330245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31586004.

The product of its (nonzero) digits is 1800, while the sum is 25.

The spelling of 51011330245 in words is "fifty-one billion, eleven million, three hundred thirty thousand, two hundred forty-five".