38721053999 has 2 divisors, whose sum is σ = 38721054000. Its totient is φ = 38721053998.

The previous prime is 38721053983. The next prime is 38721054023. The reversal of 38721053999 is 99935012783.

It is a happy number.

38721053999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38721053999 - 2⁴ = 38721053983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38721053299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19360526999 + 19360527000.

It is an arithmetic number, because the mean of its divisors is an integer number (19360527000).

Almost surely, 2^38721053999 is an apocalyptic number.

38721053999 is a deficient number, since it is larger than the sum of its proper divisors (1).

38721053999 is an equidigital number, since it uses as much as digits as its factorization.

38721053999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3674160, while the sum is 56.

The spelling of 38721053999 in words is "thirty-eight billion, seven hundred twenty-one million, fifty-three thousand, nine hundred ninety-nine".