816191283750 has 60 divisors (see below), whose sum is σ = 2039963530836. Its totient is φ = 217636256000.

The previous prime is 816191283737. The next prime is 816191283757. The reversal of 816191283750 is 57382191618.

It is a junction number, because it is equal to n+sod(n) for n = 816191283693 and 816191283702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816191283757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 55316374 + ... + 55331126.

Almost surely, 2^816191283750 is an apocalyptic number.

816191283750 is an abundant number, since it is smaller than the sum of its proper divisors (1223772247086).

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

816191283750 is an frugal number, since it uses more digits than its factorization.

816191283750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29531 (or 14763 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 51.

The spelling of 816191283750 in words is "eight hundred sixteen billion, one hundred ninety-one million, two hundred eighty-three thousand, seven hundred fifty".