40782893005861 has 2 divisors, whose sum is σ = 40782893005862. Its totient is φ = 40782893005860.

The previous prime is 40782893005763. The next prime is 40782893005873. The reversal of 40782893005861 is 16850039828704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27188142350625 + 13594750655236 = 5214225^2 + 3687106^2 .

It is a cyclic number.

It is not a de Polignac number, because 40782893005861 - 2⁴³ = 31986799983653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40782893005861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40782893002861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20391446502930 + 20391446502931.

It is an arithmetic number, because the mean of its divisors is an integer number (20391446502931).

It is a 1-persistent number, because it is pandigital, but 2⋅40782893005861 = 81565786011722 is not.

Almost surely, 2^{40782893005861} is an apocalyptic number.

It is an amenable number.

40782893005861 is a deficient number, since it is larger than the sum of its proper divisors (1).

40782893005861 is an equidigital number, since it uses as much as digits as its factorization.

40782893005861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23224320, while the sum is 61.

The spelling of 40782893005861 in words is "forty trillion, seven hundred eighty-two billion, eight hundred ninety-three million, five thousand, eight hundred sixty-one".