38042239947 has 8 divisors (see below), whose sum is σ = 50805734544. Its totient is φ = 25320119328.

The previous prime is 38042239943. The next prime is 38042239973. The reversal of 38042239947 is 74993224083.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38042239947 - 2² = 38042239943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38042239947.

It is not an unprimeable number, because it can be changed into a prime (38042239943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10341348 + ... + 10345025.

It is an arithmetic number, because the mean of its divisors is an integer number (6350716818).

Almost surely, 2^38042239947 is an apocalyptic number.

38042239947 is a deficient number, since it is larger than the sum of its proper divisors (12763494597).

38042239947 is a wasteful number, since it uses less digits than its factorization.

38042239947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20686989.

The product of its (nonzero) digits is 2612736, while the sum is 51.

The spelling of 38042239947 in words is "thirty-eight billion, forty-two million, two hundred thirty-nine thousand, nine hundred forty-seven".