40012012111440 has 160 divisors (see below), whose sum is σ = 124913815004160. Its totient is φ = 10594711461888.

The previous prime is 40012012111429. The next prime is 40012012111451. The reversal of 40012012111440 is 4411121021004.

It is an interprime number because it is at equal distance from previous prime (40012012111429) and next prime (40012012111451).

It is a super-2 number, since 2×40012012111440² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19858344 + ... + 21780216.

It is an arithmetic number, because the mean of its divisors is an integer number (780711343776).

Almost surely, 2^{40012012111440} is an apocalyptic number.

40012012111440 is a gapful number since it is divisible by the number (40) 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 40012012111440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62456907502080).

40012012111440 is an abundant number, since it is smaller than the sum of its proper divisors (84901802892720).

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

40012012111440 is a wasteful number, since it uses less digits than its factorization.

40012012111440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922501 (or 1922495 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 40012012111440 its reverse (4411121021004), we get a palindrome (44423133132444).

The spelling of 40012012111440 in words is "forty trillion, twelve billion, twelve million, one hundred eleven thousand, four hundred forty".