15420105313 has 4 divisors (see below), whose sum is σ = 15420357808. Its totient is φ = 15419852820.

The previous prime is 15420105307. The next prime is 15420105373. The reversal of 15420105313 is 31350102451.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31350102451 = 53 ⋅591511367.

It is a cyclic number.

It is not a de Polignac number, because 15420105313 - 2²¹ = 15418008161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15420105373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28978 + ... + 177988.

It is an arithmetic number, because the mean of its divisors is an integer number (3855089452).

Almost surely, 2^15420105313 is an apocalyptic number.

It is an amenable number.

15420105313 is a deficient number, since it is larger than the sum of its proper divisors (252495).

15420105313 is a wasteful number, since it uses less digits than its factorization.

15420105313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252494.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 15420105313 its reverse (31350102451), we get a palindrome (46770207764).

The spelling of 15420105313 in words is "fifteen billion, four hundred twenty million, one hundred five thousand, three hundred thirteen".