13405051221552 has 80 divisors (see below), whose sum is σ = 38477911541760. Its totient is φ = 4468298184000.

The previous prime is 13405051221493. The next prime is 13405051221571. The reversal of 13405051221552 is 25512215050431.

13405051221552 is a `hidden beast` number, since 1 + 3 + 4 + 0 + 50 + 51 + 2 + 2 + 1 + 552 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 15 ways as a sum of consecutive naturals, for example, 59638177 + ... + 59862527.

It is an arithmetic number, because the mean of its divisors is an integer number (480973894272).

Almost surely, 2^{13405051221552} is an apocalyptic number.

13405051221552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13405051221552 is an abundant number, since it is smaller than the sum of its proper divisors (25072860320208).

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

13405051221552 is a wasteful number, since it uses less digits than its factorization.

13405051221552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362679 (or 362667 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

Adding to 13405051221552 its reverse (25512215050431), we get a palindrome (38917266271983).

The spelling of 13405051221552 in words is "thirteen trillion, four hundred five billion, fifty-one million, two hundred twenty-one thousand, five hundred fifty-two".