15401521201 has 16 divisors (see below), whose sum is σ = 17707541760. Its totient is φ = 13248280080.

The previous prime is 15401521169. The next prime is 15401521253. The reversal of 15401521201 is 10212510451.

It is a cyclic number.

It is not a de Polignac number, because 15401521201 - 2⁵ = 15401521169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15401521271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128290 + ... + 217396.

It is an arithmetic number, because the mean of its divisors is an integer number (1106721360).

Almost surely, 2^15401521201 is an apocalyptic number.

15401521201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

15401521201 is a deficient number, since it is larger than the sum of its proper divisors (2306020559).

15401521201 is a wasteful number, since it uses less digits than its factorization.

15401521201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89964.

The product of its (nonzero) digits is 400, while the sum is 22.

The spelling of 15401521201 in words is "fifteen billion, four hundred one million, five hundred twenty-one thousand, two hundred one".