40067256840 has 192 divisors, whose sum is σ = 130371249600. Its totient is φ = 9846660096.

The previous prime is 40067256793. The next prime is 40067256841. The reversal of 40067256840 is 4865276004.

It is a junction number, because it is equal to n+sod(n) for n = 40067256792 and 40067256801.

It is not an unprimeable number, because it can be changed into a prime (40067256841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16770366 + ... + 16772754.

It is an arithmetic number, because the mean of its divisors is an integer number (679016925).

Almost surely, 2^40067256840 is an apocalyptic number.

40067256840 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 40067256840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65185624800).

40067256840 is an abundant number, since it is smaller than the sum of its proper divisors (90303992760).

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

40067256840 is a wasteful number, since it uses less digits than its factorization.

40067256840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3256 (or 3239 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

The spelling of 40067256840 in words is "forty billion, sixty-seven million, two hundred fifty-six thousand, eight hundred forty".