51794951087 has 24 divisors (see below), whose sum is σ = 57495759552. Its totient is φ = 46620654080.

The previous prime is 51794951077. The next prime is 51794951111. The reversal of 51794951087 is 78015949715.

It is a happy number.

It is not a de Polignac number, because 51794951087 - 2⁶ = 51794951023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51794951027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21643163 + ... + 21645555.

It is an arithmetic number, because the mean of its divisors is an integer number (2395656648).

Almost surely, 2^51794951087 is an apocalyptic number.

51794951087 is a deficient number, since it is larger than the sum of its proper divisors (5700808465).

51794951087 is a wasteful number, since it uses less digits than its factorization.

51794951087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4111 (or 4100 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 56.

The spelling of 51794951087 in words is "fifty-one billion, seven hundred ninety-four million, nine hundred fifty-one thousand, eighty-seven".