38851490845439 has 4 divisors (see below), whose sum is σ = 38853712344480. Its totient is φ = 38849269346400.

The previous prime is 38851490845379. The next prime is 38851490845481. The reversal of 38851490845439 is 93454809415883.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38851490845439 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 (38851490845339) 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, 1110723287 + ... + 1110758264.

It is an arithmetic number, because the mean of its divisors is an integer number (9713428086120).

Almost surely, 2^{38851490845439} is an apocalyptic number.

38851490845439 is a deficient number, since it is larger than the sum of its proper divisors (2221499041).

38851490845439 is a wasteful number, since it uses less digits than its factorization.

38851490845439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221499040.

The product of its (nonzero) digits is 597196800, while the sum is 71.

The spelling of 38851490845439 in words is "thirty-eight trillion, eight hundred fifty-one billion, four hundred ninety million, eight hundred forty-five thousand, four hundred thirty-nine".