16387572419 has 4 divisors (see below), whose sum is σ = 16412668896. Its totient is φ = 16362475944.

The previous prime is 16387572413. The next prime is 16387572521. The reversal of 16387572419 is 91427578361.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16387572419 - 2⁸ = 16387572163 is a prime.

It is a super-2 number, since 2×16387572419² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16387572413) 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, 12547259 + ... + 12548564.

It is an arithmetic number, because the mean of its divisors is an integer number (4103167224).

Almost surely, 2^16387572419 is an apocalyptic number.

16387572419 is a deficient number, since it is larger than the sum of its proper divisors (25096477).

16387572419 is an equidigital number, since it uses as much as digits as its factorization.

16387572419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25096476.

The product of its digits is 2540160, while the sum is 53.

The spelling of 16387572419 in words is "sixteen billion, three hundred eighty-seven million, five hundred seventy-two thousand, four hundred nineteen".