51444245245 has 16 divisors (see below), whose sum is σ = 67807520640. Its totient is φ = 37294133184.

The previous prime is 51444245221. The next prime is 51444245257. The reversal of 51444245245 is 54254244415.

It is a cyclic number.

It is not a de Polignac number, because 51444245245 - 2²⁵ = 51410690813 is a prime.

It is a super-2 number, since 2×51444245245² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51444245198 and 51444245207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11769954 + ... + 11774323.

It is an arithmetic number, because the mean of its divisors is an integer number (4237970040).

Almost surely, 2^51444245245 is an apocalyptic number.

It is an amenable number.

51444245245 is a deficient number, since it is larger than the sum of its proper divisors (16363275395).

51444245245 is a wasteful number, since it uses less digits than its factorization.

51444245245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23544324.

The product of its digits is 512000, while the sum is 40.

The spelling of 51444245245 in words is "fifty-one billion, four hundred forty-four million, two hundred forty-five thousand, two hundred forty-five".