28373506491599 has 16 divisors (see below), whose sum is σ = 28652777939712. Its totient is φ = 28095548165568.

The previous prime is 28373506491593. The next prime is 28373506491623. The reversal of 28373506491599 is 99519460537382.

It is a cyclic number.

It is not a de Polignac number, because 28373506491599 - 2¹² = 28373506487503 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 (28373506491593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331024982 + ... + 331110684.

It is an arithmetic number, because the mean of its divisors is an integer number (1790798621232).

It is a 2-persistent number, because it is pandigital, and so is 2⋅28373506491599 = 56747012983198, but 3⋅28373506491599 = 85120519474797 is not.

Almost surely, 2^{28373506491599} is an apocalyptic number.

28373506491599 is a deficient number, since it is larger than the sum of its proper divisors (279271448113).

28373506491599 is a wasteful number, since it uses less digits than its factorization.

28373506491599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93326.

The product of its (nonzero) digits is 440899200, while the sum is 71.

The spelling of 28373506491599 in words is "twenty-eight trillion, three hundred seventy-three billion, five hundred six million, four hundred ninety-one thousand, five hundred ninety-nine".