38902066261 has 4 divisors (see below), whose sum is σ = 38908348000. Its totient is φ = 38895784524.

The previous prime is 38902066243. The next prime is 38902066271. The reversal of 38902066261 is 16266020983.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16266020983 = 241 ⋅67493863.

It is a cyclic number.

It is not a de Polignac number, because 38902066261 - 2³⁵ = 4542327893 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 (38902066271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3131571 + ... + 3143968.

It is an arithmetic number, because the mean of its divisors is an integer number (9727087000).

Almost surely, 2^38902066261 is an apocalyptic number.

It is an amenable number.

38902066261 is a deficient number, since it is larger than the sum of its proper divisors (6281739).

38902066261 is an equidigital number, since it uses as much as digits as its factorization.

38902066261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6281738.

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 38902066261 in words is "thirty-eight billion, nine hundred two million, sixty-six thousand, two hundred sixty-one".