52191718250 has 64 divisors (see below), whose sum is σ = 111747257856. Its totient is φ = 17880393600.

The previous prime is 52191718237. The next prime is 52191718261. The reversal of 52191718250 is 5281719125.

It is a junction number, because it is equal to n+sod(n) for n = 52191718198 and 52191718207.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2381342 + ... + 2403158.

It is an arithmetic number, because the mean of its divisors is an integer number (1746050904).

Almost surely, 2^52191718250 is an apocalyptic number.

52191718250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

52191718250 is an abundant number, since it is smaller than the sum of its proper divisors (59555539606).

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

52191718250 is a wasteful number, since it uses less digits than its factorization.

52191718250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23208 (or 23198 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 41.

The spelling of 52191718250 in words is "fifty-two billion, one hundred ninety-one million, seven hundred eighteen thousand, two hundred fifty".