51277515406 has 16 divisors (see below), whose sum is σ = 82903097088. Its totient is φ = 23646492000.

The previous prime is 51277515403. The next prime is 51277515407. The reversal of 51277515406 is 60451577215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51277515403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 804270 + ... + 865681.

It is an arithmetic number, because the mean of its divisors is an integer number (5181443568).

Almost surely, 2^51277515406 is an apocalyptic number.

51277515406 is a deficient number, since it is larger than the sum of its proper divisors (31625581682).

51277515406 is a wasteful number, since it uses less digits than its factorization.

51277515406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671147.

The product of its (nonzero) digits is 294000, while the sum is 43.

The spelling of 51277515406 in words is "fifty-one billion, two hundred seventy-seven million, five hundred fifteen thousand, four hundred six".