28019401127423 has 4 divisors (see below), whose sum is σ = 29667601193760. Its totient is φ = 26371201061088.

The previous prime is 28019401127411. The next prime is 28019401127447. The reversal of 28019401127423 is 32472110491082.

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 28019401127423 - 2²⁸ = 28019132691967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28019401127483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 824100033143 + ... + 824100033176.

It is an arithmetic number, because the mean of its divisors is an integer number (7416900298440).

Almost surely, 2^{28019401127423} is an apocalyptic number.

28019401127423 is a deficient number, since it is larger than the sum of its proper divisors (1648200066337).

28019401127423 is a wasteful number, since it uses less digits than its factorization.

28019401127423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648200066336.

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 28019401127423 in words is "twenty-eight trillion, nineteen billion, four hundred one million, one hundred twenty-seven thousand, four hundred twenty-three".