51286503853 has 12 divisors (see below), whose sum is σ = 55972397568. Its totient is φ = 46968601680.

The previous prime is 51286503833. The next prime is 51286503887. The reversal of 51286503853 is 35830568215.

It is a happy number.

It is not a de Polignac number, because 51286503853 - 2³³ = 42696569261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51286503833) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1173303 + ... + 1216228.

It is an arithmetic number, because the mean of its divisors is an integer number (4664366464).

Almost surely, 2^51286503853 is an apocalyptic number.

It is an amenable number.

51286503853 is a deficient number, since it is larger than the sum of its proper divisors (4685893715).

51286503853 is a wasteful number, since it uses less digits than its factorization.

51286503853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389684 (or 2389671 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 46.

The spelling of 51286503853 in words is "fifty-one billion, two hundred eighty-six million, five hundred three thousand, eight hundred fifty-three".