38040421249 has 4 divisors (see below), whose sum is σ = 38148184836. Its totient is φ = 37932657664.

The previous prime is 38040421193. The next prime is 38040421259. The reversal of 38040421249 is 94212404083.

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 6691240000 + 31349181249 = 81800^2 + 177057^2 .

It is a cyclic number.

It is not a de Polignac number, because 38040421249 - 2¹⁷ = 38040290177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38040421259) 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, 53881264 + ... + 53881969.

It is an arithmetic number, because the mean of its divisors is an integer number (9537046209).

Almost surely, 2^38040421249 is an apocalyptic number.

It is an amenable number.

38040421249 is a deficient number, since it is larger than the sum of its proper divisors (107763587).

38040421249 is a wasteful number, since it uses less digits than its factorization.

38040421249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107763586.

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 38040421249 in words is "thirty-eight billion, forty million, four hundred twenty-one thousand, two hundred forty-nine".