38827704821 has 4 divisors (see below), whose sum is σ = 39212137644. Its totient is φ = 38443272000.

The previous prime is 38827704803. The next prime is 38827704823. The reversal of 38827704821 is 12840772883.

38827704821 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.

It can be written as a sum of positive squares in 2 ways, for example, as 22034136721 + 16793568100 = 148439^2 + 129590^2 .

It is a cyclic number.

It is not a de Polignac number, because 38827704821 - 2⁶ = 38827704757 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38827704821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38827704823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192216260 + ... + 192216461.

It is an arithmetic number, because the mean of its divisors is an integer number (9803034411).

Almost surely, 2^38827704821 is an apocalyptic number.

It is an amenable number.

38827704821 is a deficient number, since it is larger than the sum of its proper divisors (384432823).

38827704821 is a wasteful number, since it uses less digits than its factorization.

38827704821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384432822.

The product of its (nonzero) digits is 1204224, while the sum is 50.

The spelling of 38827704821 in words is "thirty-eight billion, eight hundred twenty-seven million, seven hundred four thousand, eight hundred twenty-one".