38660580040 has 32 divisors (see below), whose sum is σ = 87030000000. Its totient is φ = 15456464064.

The previous prime is 38660579983. The next prime is 38660580047. The reversal of 38660580040 is 4008506683.

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 = 38660579975 and 38660580002.

It is not an unprimeable number, because it can be changed into a prime (38660580047) 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, 161790 + ... + 321709.

It is an arithmetic number, because the mean of its divisors is an integer number (2719687500).

Almost surely, 2^38660580040 is an apocalyptic number.

It is an amenable number.

38660580040 is an abundant number, since it is smaller than the sum of its proper divisors (48369419960).

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

38660580040 is a wasteful number, since it uses less digits than its factorization.

38660580040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485509 (or 485505 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 38660580040 in words is "thirty-eight billion, six hundred sixty million, five hundred eighty thousand, forty".