13146551550 has 144 divisors (see below), whose sum is σ = 38580544080. Its totient is φ = 3182976000.

The previous prime is 13146551549. The next prime is 13146551563. The reversal of 13146551550 is 5515564131.

13146551550 is a `hidden beast` number, since 1 + 31 + 4 + 65 + 515 + 50 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

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, 6082470 + ... + 6084630.

It is an arithmetic number, because the mean of its divisors is an integer number (267920445).

Almost surely, 2^13146551550 is an apocalyptic number.

13146551550 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 13146551550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19290272040).

13146551550 is an abundant number, since it is smaller than the sum of its proper divisors (25433992530).

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

13146551550 is a wasteful number, since it uses less digits than its factorization.

13146551550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3419 (or 3411 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The spelling of 13146551550 in words is "thirteen billion, one hundred forty-six million, five hundred fifty-one thousand, five hundred fifty".