15400420343045 has 8 divisors (see below), whose sum is σ = 18484849723896. Its totient is φ = 12317439399616.

The previous prime is 15400420342987. The next prime is 15400420343059. The reversal of 15400420343045 is 54034302400451.

It can be written as a sum of positive squares in 4 ways, for example, as 2739789663361 + 12660630679684 = 1655231^2 + 3558178^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15400420343045 - 2²⁶ = 15400353234181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15400420342996 and 15400420343014.

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 7 ways as a sum of consecutive naturals, for example, 362085962 + ... + 362128491.

It is an arithmetic number, because the mean of its divisors is an integer number (2310606215487).

Almost surely, 2^{15400420343045} is an apocalyptic number.

It is an amenable number.

15400420343045 is a deficient number, since it is larger than the sum of its proper divisors (3084429380851).

15400420343045 is an equidigital number, since it uses as much as digits as its factorization.

15400420343045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724218711.

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 15400420343045 its reverse (54034302400451), we get a palindrome (69434722743496).

The spelling of 15400420343045 in words is "fifteen trillion, four hundred billion, four hundred twenty million, three hundred forty-three thousand, forty-five".