158251784550 has 96 divisors (see below), whose sum is σ = 401442666144. Its totient is φ = 41243904000.

The previous prime is 158251784549. The next prime is 158251784563. The reversal of 158251784550 is 55487152851.

It is a junction number, because it is equal to n+sod(n) for n = 158251784493 and 158251784502.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1381470 + ... + 1491630.

It is an arithmetic number, because the mean of its divisors is an integer number (4181694439).

Almost surely, 2^158251784550 is an apocalyptic number.

158251784550 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 158251784550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200721333072).

158251784550 is an abundant number, since it is smaller than the sum of its proper divisors (243190881594).

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

158251784550 is a wasteful number, since it uses less digits than its factorization.

158251784550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110394 (or 110389 counting only the distinct ones).

The product of its (nonzero) digits is 2240000, while the sum is 51.

The spelling of 158251784550 in words is "one hundred fifty-eight billion, two hundred fifty-one million, seven hundred eighty-four thousand, five hundred fifty".