131263475850 has 144 divisors (see below), whose sum is σ = 385139349504. Its totient is φ = 31855824000.

The previous prime is 131263475821. The next prime is 131263475873. The reversal of 131263475850 is 58574362131.

It is a happy number.

131263475850 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 63 + 4 + 7 + 585 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 131263475796 and 131263475805.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 257335 + ... + 573365.

It is an arithmetic number, because the mean of its divisors is an integer number (2674578816).

Almost surely, 2^131263475850 is an apocalyptic number.

131263475850 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 131263475850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192569674752).

131263475850 is an abundant number, since it is smaller than the sum of its proper divisors (253875873654).

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

131263475850 is a wasteful number, since it uses less digits than its factorization.

131263475850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316133 (or 316125 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 131263475850 in words is "one hundred thirty-one billion, two hundred sixty-three million, four hundred seventy-five thousand, eight hundred fifty".