51040860223 has 4 divisors (see below), whose sum is σ = 51042424888. Its totient is φ = 51039295560.

The previous prime is 51040860181. The next prime is 51040860229. The reversal of 51040860223 is 32206804015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32206804015 = 5 ⋅6441360803.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51040860223 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 (51040860229) 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, 732336 + ... + 798997.

It is an arithmetic number, because the mean of its divisors is an integer number (12760606222).

Almost surely, 2^51040860223 is an apocalyptic number.

51040860223 is a deficient number, since it is larger than the sum of its proper divisors (1564665).

51040860223 is a wasteful number, since it uses less digits than its factorization.

51040860223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564664.

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 51040860223 in words is "fifty-one billion, forty million, eight hundred sixty thousand, two hundred twenty-three".