15401431561 has 8 divisors (see below), whose sum is σ = 15761291040. Its totient is φ = 15041648832.

The previous prime is 15401431523. The next prime is 15401431579. The reversal of 15401431561 is 16513410451.

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 15401431561 - 2¹¹ = 15401429513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15401411561) by changing a digit.

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, 682881 + ... + 705073.

It is an arithmetic number, because the mean of its divisors is an integer number (1970161380).

Almost surely, 2^15401431561 is an apocalyptic number.

It is an amenable number.

15401431561 is a deficient number, since it is larger than the sum of its proper divisors (359859479).

15401431561 is a wasteful number, since it uses less digits than its factorization.

15401431561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38375.

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 15401431561 in words is "fifteen billion, four hundred one million, four hundred thirty-one thousand, five hundred sixty-one".