40153112520 has 128 divisors (see below), whose sum is σ = 122554736640. Its totient is φ = 10522607360.

The previous prime is 40153112497. The next prime is 40153112561. The reversal of 40153112520 is 2521135104.

It is a happy number.

It is a super-2 number, since 2×40153112520² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 1891807 + ... + 1912913.

It is an arithmetic number, because the mean of its divisors is an integer number (957458880).

Almost surely, 2^40153112520 is an apocalyptic number.

40153112520 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 40153112520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61277368320).

40153112520 is an abundant number, since it is smaller than the sum of its proper divisors (82401624120).

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

40153112520 is a wasteful number, since it uses less digits than its factorization.

40153112520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21395 (or 21391 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 40153112520 its reverse (2521135104), we get a palindrome (42674247624).

The spelling of 40153112520 in words is "forty billion, one hundred fifty-three million, one hundred twelve thousand, five hundred twenty".