38372400085661 has 4 divisors (see below), whose sum is σ = 38373049171392. Its totient is φ = 38371750999932.

The previous prime is 38372400085639. The next prime is 38372400085673. The reversal of 38372400085661 is 16658000427383.

It is a happy number.

38372400085661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38372400085661 - 2⁶ = 38372400085597 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 (38372400085601) 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 3 ways as a sum of consecutive naturals, for example, 324454181 + ... + 324572426.

It is an arithmetic number, because the mean of its divisors is an integer number (9593262292848).

Almost surely, 2^{38372400085661} is an apocalyptic number.

It is an amenable number.

38372400085661 is a deficient number, since it is larger than the sum of its proper divisors (649085731).

38372400085661 is an equidigital number, since it uses as much as digits as its factorization.

38372400085661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649085730.

The product of its (nonzero) digits is 5806080, while the sum is 53.

The spelling of 38372400085661 in words is "thirty-eight trillion, three hundred seventy-two billion, four hundred million, eighty-five thousand, six hundred sixty-one".