15404340025413 has 12 divisors (see below), whose sum is σ = 22257127572940. Its totient is φ = 10266599615616.

The previous prime is 15404340025409. The next prime is 15404340025421. The reversal of 15404340025413 is 31452004340451.

15404340025413 is a `hidden beast` number, since 1 + 54 + 0 + 4 + 340 + 0 + 254 + 13 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1113989478849 + 14290350546564 = 1055457^2 + 3780258^2 .

It is not a de Polignac number, because 15404340025413 - 2² = 15404340025409 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15404340025463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 246667156 + ... + 246729597.

Almost surely, 2^{15404340025413} is an apocalyptic number.

It is an amenable number.

15404340025413 is a deficient number, since it is larger than the sum of its proper divisors (6852787547527).

15404340025413 is a wasteful number, since it uses less digits than its factorization.

15404340025413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493400228 (or 493400225 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 15404340025413 its reverse (31452004340451), we get a palindrome (46856344365864).

The spelling of 15404340025413 in words is "fifteen trillion, four hundred four billion, three hundred forty million, twenty-five thousand, four hundred thirteen".