40356685780 has 24 divisors (see below), whose sum is σ = 85112779752. Its totient is φ = 16073390592.

The previous prime is 40356685771. The next prime is 40356685931. The reversal of 40356685780 is 8758665304.

40356685780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2304324 + 40354381456 = 1518^2 + 200884^2 .

It is a congruent number.

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, 4325457 + ... + 4334776.

It is an arithmetic number, because the mean of its divisors is an integer number (3546365823).

Almost surely, 2^40356685780 is an apocalyptic number.

It is an amenable number.

40356685780 is an abundant number, since it is smaller than the sum of its proper divisors (44756093972).

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

40356685780 is a wasteful number, since it uses less digits than its factorization.

40356685780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8660475 (or 8660473 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 52.

The spelling of 40356685780 in words is "forty billion, three hundred fifty-six million, six hundred eighty-five thousand, seven hundred eighty".