40120699369 has 2 divisors, whose sum is σ = 40120699370. Its totient is φ = 40120699368.

The previous prime is 40120699351. The next prime is 40120699429. The reversal of 40120699369 is 96399602104.

40120699369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22381656025 + 17739043344 = 149605^2 + 133188^2 .

It is a cyclic number.

It is not a de Polignac number, because 40120699369 - 2⁹ = 40120698857 is a prime.

It is a super-2 number, since 2×40120699369² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40120690369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20060349684 + 20060349685.

It is an arithmetic number, because the mean of its divisors is an integer number (20060349685).

Almost surely, 2^40120699369 is an apocalyptic number.

It is an amenable number.

40120699369 is a deficient number, since it is larger than the sum of its proper divisors (1).

40120699369 is an equidigital number, since it uses as much as digits as its factorization.

40120699369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 629856, while the sum is 49.

The spelling of 40120699369 in words is "forty billion, one hundred twenty million, six hundred ninety-nine thousand, three hundred sixty-nine".