51311135215546 has 32 divisors (see below), whose sum is σ = 81053768238912. Its totient is φ = 24336102827520.

The previous prime is 51311135215489. The next prime is 51311135215547. The reversal of 51311135215546 is 64551253111315.

It is not an unprimeable number, because it can be changed into a prime (51311135215547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52865260 + ... + 53827111.

It is an arithmetic number, because the mean of its divisors is an integer number (2532930257466).

Almost surely, 2^{51311135215546} is an apocalyptic number.

51311135215546 is a deficient number, since it is larger than the sum of its proper divisors (29742633023366).

51311135215546 is a wasteful number, since it uses less digits than its factorization.

51311135215546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106692574.

The product of its digits is 270000, while the sum is 43.

The spelling of 51311135215546 in words is "fifty-one trillion, three hundred eleven billion, one hundred thirty-five million, two hundred fifteen thousand, five hundred forty-six".