51154323850 has 24 divisors (see below), whose sum is σ = 108739477728. Its totient is φ = 17538625200.

The previous prime is 51154323839. The next prime is 51154323859. The reversal of 51154323850 is 5832345115.

It is not an unprimeable number, because it can be changed into a prime (51154323859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73077256 + ... + 73077955.

It is an arithmetic number, because the mean of its divisors is an integer number (4530811572).

Almost surely, 2^51154323850 is an apocalyptic number.

51154323850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51154323850 is an abundant number, since it is smaller than the sum of its proper divisors (57585153878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51154323850 is a wasteful number, since it uses less digits than its factorization.

51154323850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146155230 (or 146155225 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

Adding to 51154323850 its reverse (5832345115), we get a palindrome (56986668965).

The spelling of 51154323850 in words is "fifty-one billion, one hundred fifty-four million, three hundred twenty-three thousand, eight hundred fifty".