1361205554450 has 48 divisors (see below), whose sum is σ = 2901291835200. Its totient is φ = 465447798720.

The previous prime is 1361205554413. The next prime is 1361205554453. The reversal of 1361205554450 is 544555021631.

It is a super-2 number, since 2×1361205554450² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1361205554398 and 1361205554407.

It is not an unprimeable number, because it can be changed into a prime (1361205554453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5082800 + ... + 5343899.

It is an arithmetic number, because the mean of its divisors is an integer number (60443579900).

Almost surely, 2^{1361205554450} is an apocalyptic number.

1361205554450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1361205554450 is an abundant number, since it is smaller than the sum of its proper divisors (1540086280750).

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

1361205554450 is a wasteful number, since it uses less digits than its factorization.

1361205554450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10427091 (or 10427086 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 41.

The spelling of 1361205554450 in words is "one trillion, three hundred sixty-one billion, two hundred five million, five hundred fifty-four thousand, four hundred fifty".