38040843840 has 56 divisors (see below), whose sum is σ = 120779682240. Its totient is φ = 10144224768.

The previous prime is 38040843833. The next prime is 38040843847. The reversal of 38040843840 is 4834804083.

It is an interprime number because it is at equal distance from previous prime (38040843833) and next prime (38040843847).

It is a junction number, because it is equal to n+sod(n) for n = 38040843792 and 38040843801.

It is not an unprimeable number, because it can be changed into a prime (38040843847) 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, 19811980 + ... + 19813899.

It is an arithmetic number, because the mean of its divisors is an integer number (2156780040).

Almost surely, 2^38040843840 is an apocalyptic number.

38040843840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38040843840 is an abundant number, since it is smaller than the sum of its proper divisors (82738838400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38040843840 is a wasteful number, since it uses less digits than its factorization.

38040843840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39625899 (or 39625889 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 42.

The spelling of 38040843840 in words is "thirty-eight billion, forty million, eight hundred forty-three thousand, eight hundred forty".