38315372440 has 64 divisors (see below), whose sum is σ = 87130080000. Its totient is φ = 15163378560.

The previous prime is 38315372413. The next prime is 38315372441. The reversal of 38315372440 is 4427351383.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 38315372393 and 38315372402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38315372441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1411395 + ... + 1438285.

It is an arithmetic number, because the mean of its divisors is an integer number (1361407500).

Almost surely, 2^38315372440 is an apocalyptic number.

It is an amenable number.

38315372440 is an abundant number, since it is smaller than the sum of its proper divisors (48814707560).

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

38315372440 is a wasteful number, since it uses less digits than its factorization.

38315372440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27280 (or 27276 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 38315372440 in words is "thirty-eight billion, three hundred fifteen million, three hundred seventy-two thousand, four hundred forty".