131779451850 has 96 divisors (see below), whose sum is σ = 331235424576. Its totient is φ = 34667980800.

The previous prime is 131779451849. The next prime is 131779451857. The reversal of 131779451850 is 58154977131.

It is a junction number, because it is equal to n+sod(n) for n = 131779451793 and 131779451802.

It is not an unprimeable number, because it can be changed into a prime (131779451857) 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 in 47 ways as a sum of consecutive naturals, for example, 4598065 + ... + 4626635.

It is an arithmetic number, because the mean of its divisors is an integer number (3450369006).

Almost surely, 2^131779451850 is an apocalyptic number.

131779451850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 131779451850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165617712288).

131779451850 is an abundant number, since it is smaller than the sum of its proper divisors (199455972726).

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

131779451850 is a wasteful number, since it uses less digits than its factorization.

131779451850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29000 (or 28995 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 51.

The spelling of 131779451850 in words is "one hundred thirty-one billion, seven hundred seventy-nine million, four hundred fifty-one thousand, eight hundred fifty".