15200030450401 has 4 divisors (see below), whose sum is σ = 15200039022100. Its totient is φ = 15200021878704.

The previous prime is 15200030450393. The next prime is 15200030450443. The reversal of 15200030450401 is 10405403000251.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4152058275600 + 11047972174801 = 2037660^2 + 3323849^2 .

It is a cyclic number.

It is not a de Polignac number, because 15200030450401 - 2³ = 15200030450393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15200030450461) 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, 527106 + ... + 5538763.

It is an arithmetic number, because the mean of its divisors is an integer number (3800009755525).

Almost surely, 2^{15200030450401} is an apocalyptic number.

It is an amenable number.

15200030450401 is a deficient number, since it is larger than the sum of its proper divisors (8571699).

15200030450401 is an equidigital number, since it uses as much as digits as its factorization.

15200030450401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8571698.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 15200030450401 its reverse (10405403000251), we get a palindrome (25605433450652).

The spelling of 15200030450401 in words is "fifteen trillion, two hundred billion, thirty million, four hundred fifty thousand, four hundred one".