18850246172399 has 32 divisors (see below), whose sum is σ = 19632246359040. Its totient is φ = 18090804492288.

The previous prime is 18850246172389. The next prime is 18850246172437. The reversal of 18850246172399 is 99327164205881.

It is a cyclic number.

It is not a de Polignac number, because 18850246172399 - 2⁸ = 18850246172143 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 (18850246172309) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131227514 + ... + 131371080.

It is an arithmetic number, because the mean of its divisors is an integer number (613507698720).

It is a 1-persistent number, because it is pandigital, but 2⋅18850246172399 = 37700492344798 is not.

Almost surely, 2^{18850246172399} is an apocalyptic number.

18850246172399 is a deficient number, since it is larger than the sum of its proper divisors (782000186641).

18850246172399 is a wasteful number, since it uses less digits than its factorization.

18850246172399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144047.

The product of its (nonzero) digits is 52254720, while the sum is 65.

The spelling of 18850246172399 in words is "eighteen trillion, eight hundred fifty billion, two hundred forty-six million, one hundred seventy-two thousand, three hundred ninety-nine".