40178806240 has 96 divisors (see below), whose sum is σ = 96018048000. Its totient is φ = 15887036928.

The previous prime is 40178806189. The next prime is 40178806243. The reversal of 40178806240 is 4260887104.

It is a super-2 number, since 2×40178806240² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 40178806193 and 40178806202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40178806243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5311581 + ... + 5319139.

It is an arithmetic number, because the mean of its divisors is an integer number (1000188000).

Almost surely, 2^40178806240 is an apocalyptic number.

40178806240 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 40178806240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48009024000).

40178806240 is an abundant number, since it is smaller than the sum of its proper divisors (55839241760).

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

40178806240 is a wasteful number, since it uses less digits than its factorization.

40178806240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7952 (or 7944 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The spelling of 40178806240 in words is "forty billion, one hundred seventy-eight million, eight hundred six thousand, two hundred forty".