51331133245 has 16 divisors (see below), whose sum is σ = 70403021568. Its totient is φ = 35195472000.

The previous prime is 51331133209. The next prime is 51331133261. The reversal of 51331133245 is 54233113315.

It is a happy number.

It is not a de Polignac number, because 51331133245 - 2⁹ = 51331132733 is a prime.

It is a Duffinian number.

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, 398632 + ... + 511438.

It is an arithmetic number, because the mean of its divisors is an integer number (4400188848).

Almost surely, 2^51331133245 is an apocalyptic number.

It is an amenable number.

51331133245 is a deficient number, since it is larger than the sum of its proper divisors (19071888323).

51331133245 is a wasteful number, since it uses less digits than its factorization.

51331133245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125820.

The product of its digits is 16200, while the sum is 31.

The spelling of 51331133245 in words is "fifty-one billion, three hundred thirty-one million, one hundred thirty-three thousand, two hundred forty-five".