51377408186 has 16 divisors (see below), whose sum is σ = 83600078184. Its totient is φ = 23539563264.

The previous prime is 51377408153. The next prime is 51377408189. The reversal of 51377408186 is 68180477315.

It can be written as a sum of positive squares in 4 ways, for example, as 44851191961 + 6526216225 = 211781^2 + 80785^2 .

It is not an unprimeable number, because it can be changed into a prime (51377408189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7208315 + ... + 7215438.

Almost surely, 2^51377408186 is an apocalyptic number.

51377408186 is a deficient number, since it is larger than the sum of its proper divisors (32222669998).

51377408186 is a wasteful number, since it uses less digits than its factorization.

51377408186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14423905.

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 51377408186 in words is "fifty-one billion, three hundred seventy-seven million, four hundred eight thousand, one hundred eighty-six".