40154323104 has 168 divisors, whose sum is σ = 135459424800. Its totient is φ = 11472617088.

The previous prime is 40154323063. The next prime is 40154323123. The reversal of 40154323104 is 40132345104.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (168).

It is a super-2 number, since 2×40154323104² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 40347 + ... + 286245.

It is an arithmetic number, because the mean of its divisors is an integer number (806306100).

Almost surely, 2^40154323104 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 40154323104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67729712400).

40154323104 is an abundant number, since it is smaller than the sum of its proper divisors (95305101696).

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

40154323104 is an equidigital number, since it uses as much as digits as its factorization.

40154323104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245934 (or 245911 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 40154323104 its reverse (40132345104), we get a palindrome (80286668208).

The spelling of 40154323104 in words is "forty billion, one hundred fifty-four million, three hundred twenty-three thousand, one hundred four".