38840356905 has 24 divisors (see below), whose sum is σ = 72290624832. Its totient is φ = 17755591392.

The previous prime is 38840356897. The next prime is 38840356913. The reversal of 38840356905 is 50965304883.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (38840356897) and next prime (38840356913).

It is not a de Polignac number, because 38840356905 - 2³ = 38840356897 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26421277 + ... + 26422746.

It is an arithmetic number, because the mean of its divisors is an integer number (3012109368).

Almost surely, 2^38840356905 is an apocalyptic number.

38840356905 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

38840356905 is a deficient number, since it is larger than the sum of its proper divisors (33450267927).

38840356905 is a wasteful number, since it uses less digits than its factorization.

38840356905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52844045 (or 52844038 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 51.

The spelling of 38840356905 in words is "thirty-eight billion, eight hundred forty million, three hundred fifty-six thousand, nine hundred five".