15445361561340 has 24 divisors (see below), whose sum is σ = 43247012371920. Its totient is φ = 4118763083008.

The previous prime is 15445361561297. The next prime is 15445361561381. The reversal of 15445361561340 is 4316516354451.

It is a self number, because there is not a number n which added to its sum of digits gives 15445361561340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128711346285 + ... + 128711346404.

It is an arithmetic number, because the mean of its divisors is an integer number (1801958848830).

Almost surely, 2^{15445361561340} is an apocalyptic number.

15445361561340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15445361561340 is an abundant number, since it is smaller than the sum of its proper divisors (27801650810580).

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

15445361561340 is a wasteful number, since it uses less digits than its factorization.

15445361561340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257422692701 (or 257422692699 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 15445361561340 in words is "fifteen trillion, four hundred forty-five billion, three hundred sixty-one million, five hundred sixty-one thousand, three hundred forty".