51040415534 has 4 divisors (see below), whose sum is σ = 76560623304. Its totient is φ = 25520207766.

The previous prime is 51040415513. The next prime is 51040415539. The reversal of 51040415534 is 43551404015.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 51040415534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51040415539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12760103882 + ... + 12760103885.

It is an arithmetic number, because the mean of its divisors is an integer number (19140155826).

Almost surely, 2^51040415534 is an apocalyptic number.

51040415534 is a deficient number, since it is larger than the sum of its proper divisors (25520207770).

51040415534 is a wasteful number, since it uses less digits than its factorization.

51040415534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25520207769.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 51040415534 its reverse (43551404015), we get a palindrome (94591819549).

The spelling of 51040415534 in words is "fifty-one billion, forty million, four hundred fifteen thousand, five hundred thirty-four".