40363136081 has 2 divisors, whose sum is σ = 40363136082. Its totient is φ = 40363136080.

The previous prime is 40363136071. The next prime is 40363136137. The reversal of 40363136081 is 18063136304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30470844481 + 9892291600 = 174559^2 + 99460^2 .

It is a cyclic number.

It is not a de Polignac number, because 40363136081 - 2¹⁸ = 40362873937 is a prime.

It is a super-2 number, since 2×40363136081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40363136041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20181568040 + 20181568041.

It is an arithmetic number, because the mean of its divisors is an integer number (20181568041).

Almost surely, 2^40363136081 is an apocalyptic number.

It is an amenable number.

40363136081 is a deficient number, since it is larger than the sum of its proper divisors (1).

40363136081 is an equidigital number, since it uses as much as digits as its factorization.

40363136081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 40363136081 in words is "forty billion, three hundred sixty-three million, one hundred thirty-six thousand, eighty-one".