40202232779 has 2 divisors, whose sum is σ = 40202232780. Its totient is φ = 40202232778.

The previous prime is 40202232751. The next prime is 40202232793. The reversal of 40202232779 is 97723220204.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40202232779 is a prime.

It is not a weakly prime, because it can be changed into another prime (40202232709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20101116389 + 20101116390.

It is an arithmetic number, because the mean of its divisors is an integer number (20101116390).

Almost surely, 2^40202232779 is an apocalyptic number.

40202232779 is a deficient number, since it is larger than the sum of its proper divisors (1).

40202232779 is an equidigital number, since it uses as much as digits as its factorization.

40202232779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 38.

The spelling of 40202232779 in words is "forty billion, two hundred two million, two hundred thirty-two thousand, seven hundred seventy-nine".