40015097472 has 128 divisors (see below), whose sum is σ = 121567680000. Its totient is φ = 11424107520.

The previous prime is 40015097443. The next prime is 40015097489. The reversal of 40015097472 is 27479051004.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 40015097472.

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, 4024347 + ... + 4034277.

It is an arithmetic number, because the mean of its divisors is an integer number (949747500).

Almost surely, 2^40015097472 is an apocalyptic number.

40015097472 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40015097472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60783840000).

40015097472 is an abundant number, since it is smaller than the sum of its proper divisors (81552582528).

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

40015097472 is a wasteful number, since it uses less digits than its factorization.

40015097472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11454 (or 11442 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 40015097472 in words is "forty billion, fifteen million, ninety-seven thousand, four hundred seventy-two".