40015521040 has 40 divisors (see below), whose sum is σ = 101493914688. Its totient is φ = 14551098240.

The previous prime is 40015521031. The next prime is 40015521047. The reversal of 40015521040 is 4012551004.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (40015521047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22735212 + ... + 22736971.

Almost surely, 2^40015521040 is an apocalyptic number.

40015521040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40015521040 is an abundant number, since it is smaller than the sum of its proper divisors (61478393648).

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

40015521040 is a wasteful number, since it uses less digits than its factorization.

40015521040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45472207 (or 45472201 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The spelling of 40015521040 in words is "forty billion, fifteen million, five hundred twenty-one thousand, forty".