40778878404432 has 160 divisors (see below), whose sum is σ = 129822360837120. Its totient is φ = 10768674954240.

The previous prime is 40778878404343. The next prime is 40778878404499. The reversal of 40778878404432 is 23440487887704.

It is a congruent number.

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, 77636658 + ... + 78160145.

It is an arithmetic number, because the mean of its divisors is an integer number (811389755232).

Almost surely, 2^{40778878404432} is an apocalyptic number.

40778878404432 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

40778878404432 is an abundant number, since it is smaller than the sum of its proper divisors (89043482432688).

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

40778878404432 is a wasteful number, since it uses less digits than its factorization.

40778878404432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155796881 (or 155796875 counting only the distinct ones).

The product of its (nonzero) digits is 269746176, while the sum is 66.

The spelling of 40778878404432 in words is "forty trillion, seven hundred seventy-eight billion, eight hundred seventy-eight million, four hundred four thousand, four hundred thirty-two".