40005321000 has 64 divisors (see below), whose sum is σ = 124816610880. Its totient is φ = 10668084800.

The previous prime is 40005320969. The next prime is 40005321019. The reversal of 40005321000 is 12350004.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6664554 + ... + 6670553.

It is an arithmetic number, because the mean of its divisors is an integer number (1950259545).

Almost surely, 2^40005321000 is an apocalyptic number.

40005321000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40005321000 is an abundant number, since it is smaller than the sum of its proper divisors (84811289880).

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

40005321000 is a wasteful number, since it uses less digits than its factorization.

40005321000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13335131 (or 13335117 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

Adding to 40005321000 its reverse (12350004), we get a palindrome (40017671004).

The spelling of 40005321000 in words is "forty billion, five million, three hundred twenty-one thousand".