40153243440 has 80 divisors (see below), whose sum is σ = 126228278016. Its totient is φ = 10556716800.

The previous prime is 40153243423. The next prime is 40153243477. The reversal of 40153243440 is 4434235104.

40153243440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×40153243440² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 40153243398 and 40153243407.

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, 1161166 + ... + 1195245.

Almost surely, 2^40153243440 is an apocalyptic number.

40153243440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40153243440 is an abundant number, since it is smaller than the sum of its proper divisors (86075034576).

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

40153243440 is a wasteful number, since it uses less digits than its factorization.

40153243440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2356498 (or 2356492 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 40153243440 its reverse (4434235104), we get a palindrome (44587478544).

The spelling of 40153243440 in words is "forty billion, one hundred fifty-three million, two hundred forty-three thousand, four hundred forty".