40011531012 has 96 divisors (see below), whose sum is σ = 104535580800. Its totient is φ = 13234306176.

The previous prime is 40011531011. The next prime is 40011531023. The reversal of 40011531012 is 21013511004.

It is a super-2 number, since 2×40011531012² (a number of 22 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (40011531011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19718814 + ... + 19720842.

It is an arithmetic number, because the mean of its divisors is an integer number (1088912300).

Almost surely, 2^40011531012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40011531012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52267790400).

40011531012 is an abundant number, since it is smaller than the sum of its proper divisors (64524049788).

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

40011531012 is a wasteful number, since it uses less digits than its factorization.

40011531012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3362 (or 3354 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The spelling of 40011531012 in words is "forty billion, eleven million, five hundred thirty-one thousand, twelve".