40373965782 has 80 divisors (see below), whose sum is σ = 91717496640. Its totient is φ = 13272450048.

The previous prime is 40373965777. The next prime is 40373965799. The reversal of 40373965782 is 28756937304.

40373965782 is a `hidden beast` number, since 4 + 0 + 37 + 39 + 6 + 578 + 2 = 666.

It is a super-2 number, since 2×40373965782² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 19106358 + ... + 19108470.

It is an arithmetic number, because the mean of its divisors is an integer number (1146468708).

Almost surely, 2^40373965782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40373965782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45858748320).

40373965782 is an abundant number, since it is smaller than the sum of its proper divisors (51343530858).

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

40373965782 is a wasteful number, since it uses less digits than its factorization.

40373965782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3699 (or 3690 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 54.

The spelling of 40373965782 in words is "forty billion, three hundred seventy-three million, nine hundred sixty-five thousand, seven hundred eighty-two".