1361250026550 has 48 divisors (see below), whose sum is σ = 3751000076880. Its totient is φ = 363000006720.

The previous prime is 1361250026537. The next prime is 1361250026561. The reversal of 1361250026550 is 556200521631.

1361250026550 is a `hidden beast` number, since 1 + 3 + 61 + 25 + 0 + 0 + 26 + 550 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 504165327 + ... + 504168026.

It is an arithmetic number, because the mean of its divisors is an integer number (78145834935).

Almost surely, 2^{1361250026550} is an apocalyptic number.

1361250026550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1361250026550 is an abundant number, since it is smaller than the sum of its proper divisors (2389750050330).

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

1361250026550 is a wasteful number, since it uses less digits than its factorization.

1361250026550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008333374 (or 1008333363 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 1361250026550 in words is "one trillion, three hundred sixty-one billion, two hundred fifty million, twenty-six thousand, five hundred fifty".