40401433280 has 56 divisors (see below), whose sum is σ = 103606378512. Its totient is φ = 14917450752.

The previous prime is 40401433279. The next prime is 40401433297. The reversal of 40401433280 is 8233410404.

It is a super-2 number, since 2×40401433280² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4851782 + ... + 4860101.

It is an arithmetic number, because the mean of its divisors is an integer number (1850113902).

Almost surely, 2^40401433280 is an apocalyptic number.

40401433280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40401433280 is an abundant number, since it is smaller than the sum of its proper divisors (63204945232).

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

40401433280 is a wasteful number, since it uses less digits than its factorization.

40401433280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9711913 (or 9711903 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 40401433280 its reverse (8233410404), we get a palindrome (48634843684).

The spelling of 40401433280 in words is "forty billion, four hundred one million, four hundred thirty-three thousand, two hundred eighty".