51913027257 has 16 divisors (see below), whose sum is σ = 85190609280. Its totient is φ = 27382695552.

The previous prime is 51913027237. The next prime is 51913027259. The reversal of 51913027257 is 75272031915.

51913027257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51913027257 - 2⁷ = 51913027129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51913027259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95078532 + ... + 95079077.

It is an arithmetic number, because the mean of its divisors is an integer number (5324413080).

Almost surely, 2^51913027257 is an apocalyptic number.

It is an amenable number.

51913027257 is a deficient number, since it is larger than the sum of its proper divisors (33277582023).

51913027257 is a wasteful number, since it uses less digits than its factorization.

51913027257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190157632.

The product of its (nonzero) digits is 132300, while the sum is 42.

The spelling of 51913027257 in words is "fifty-one billion, nine hundred thirteen million, twenty-seven thousand, two hundred fifty-seven".