51277324544 has 36 divisors (see below), whose sum is σ = 102489236220. Its totient is φ = 25604874240.

The previous prime is 51277324541. The next prime is 51277324597. The reversal of 51277324544 is 44542377215.

It can be written as a sum of positive squares in 2 ways, for example, as 3193606144 + 48083718400 = 56512^2 + 219280^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51277324495 and 51277324504.

It is not an unprimeable number, because it can be changed into a prime (51277324541) 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, 63212 + ... + 326420.

Almost surely, 2^51277324544 is an apocalyptic number.

It is an amenable number.

51277324544 is a deficient number, since it is larger than the sum of its proper divisors (51211911676).

51277324544 is an equidigital number, since it uses as much as digits as its factorization.

51277324544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263986 (or 263972 counting only the distinct ones).

The product of its digits is 940800, while the sum is 44.

The spelling of 51277324544 in words is "fifty-one billion, two hundred seventy-seven million, three hundred twenty-four thousand, five hundred forty-four".