40013015004 has 18 divisors (see below), whose sum is σ = 101144010240. Its totient is φ = 13337671656.

The previous prime is 40013014999. The next prime is 40013015017. The reversal of 40013015004 is 40051031004.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 555736284 + ... + 555736355.

It is an arithmetic number, because the mean of its divisors is an integer number (5619111680).

Almost surely, 2^40013015004 is an apocalyptic number.

It is an amenable number.

40013015004 is an abundant number, since it is smaller than the sum of its proper divisors (61130995236).

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

40013015004 is a wasteful number, since it uses less digits than its factorization.

40013015004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111472649 (or 1111472644 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 40013015004 its reverse (40051031004), we get a palindrome (80064046008).

The spelling of 40013015004 in words is "forty billion, thirteen million, fifteen thousand, four".