38720214973439 has 16 divisors (see below), whose sum is σ = 39616643420160. Its totient is φ = 37826874534240.

The previous prime is 38720214973367. The next prime is 38720214973499. The reversal of 38720214973439 is 93437941202783.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38720214973439 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 (38720214973499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56155232 + ... + 56840570.

It is an arithmetic number, because the mean of its divisors is an integer number (2476040213760).

Almost surely, 2^{38720214973439} is an apocalyptic number.

38720214973439 is a deficient number, since it is larger than the sum of its proper divisors (896428446721).

38720214973439 is a wasteful number, since it uses less digits than its factorization.

38720214973439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687590.

The product of its (nonzero) digits is 54867456, while the sum is 62.

The spelling of 38720214973439 in words is "thirty-eight trillion, seven hundred twenty billion, two hundred fourteen million, nine hundred seventy-three thousand, four hundred thirty-nine".