51701685001 has 4 divisors (see below), whose sum is σ = 52282602900. Its totient is φ = 51120767104.

The previous prime is 51701684999. The next prime is 51701685097. The reversal of 51701685001 is 10058610715.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10058610715 = 5 ⋅2011722143.

It can be written as a sum of positive squares in 2 ways, for example, as 33328153600 + 18373531401 = 182560^2 + 135549^2 .

It is a cyclic number.

It is not a de Polignac number, because 51701685001 - 2¹ = 51701684999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51701685701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290458816 + ... + 290458993.

It is an arithmetic number, because the mean of its divisors is an integer number (13070650725).

Almost surely, 2^51701685001 is an apocalyptic number.

It is an amenable number.

51701685001 is a deficient number, since it is larger than the sum of its proper divisors (580917899).

51701685001 is an equidigital number, since it uses as much as digits as its factorization.

51701685001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580917898.

The product of its (nonzero) digits is 8400, while the sum is 34.

The spelling of 51701685001 in words is "fifty-one billion, seven hundred one million, six hundred eighty-five thousand, one".