51257863801 has 8 divisors (see below), whose sum is σ = 51924406400. Its totient is φ = 50591764080.

The previous prime is 51257863763. The next prime is 51257863831. The reversal of 51257863801 is 10836875215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51257863801 - 2⁷ = 51257863673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51257863831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125515 + ... + 343903.

It is an arithmetic number, because the mean of its divisors is an integer number (6490550800).

Almost surely, 2^51257863801 is an apocalyptic number.

It is an amenable number.

51257863801 is a deficient number, since it is larger than the sum of its proper divisors (666542599).

51257863801 is a wasteful number, since it uses less digits than its factorization.

51257863801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221439.

The product of its (nonzero) digits is 403200, while the sum is 46.

The spelling of 51257863801 in words is "fifty-one billion, two hundred fifty-seven million, eight hundred sixty-three thousand, eight hundred one".