51853518850 has 24 divisors (see below), whose sum is σ = 110225766528. Its totient is φ = 17778349200.

The previous prime is 51853518809. The next prime is 51853518851. The reversal of 51853518850 is 5881535815.

It is a junction number, because it is equal to n+sod(n) for n = 51853518794 and 51853518803.

It is not an unprimeable number, because it can be changed into a prime (51853518851) 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, 74076106 + ... + 74076805.

It is an arithmetic number, because the mean of its divisors is an integer number (4592740272).

Almost surely, 2^51853518850 is an apocalyptic number.

51853518850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51853518850 is an abundant number, since it is smaller than the sum of its proper divisors (58372247678).

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

51853518850 is a wasteful number, since it uses less digits than its factorization.

51853518850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148152930 (or 148152925 counting only the distinct ones).

The product of its (nonzero) digits is 960000, while the sum is 49.

The spelling of 51853518850 in words is "fifty-one billion, eight hundred fifty-three million, five hundred eighteen thousand, eight hundred fifty".