203640077939 has 2 divisors, whose sum is σ = 203640077940. Its totient is φ = 203640077938.

The previous prime is 203640077923. The next prime is 203640078001. The reversal of 203640077939 is 939770046302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203640077939 - 2⁴ = 203640077923 is a prime.

It is not a weakly prime, because it can be changed into another prime (203640077339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101820038969 + 101820038970.

It is an arithmetic number, because the mean of its divisors is an integer number (101820038970).

Almost surely, 2^203640077939 is an apocalyptic number.

203640077939 is a deficient number, since it is larger than the sum of its proper divisors (1).

203640077939 is an equidigital number, since it uses as much as digits as its factorization.

203640077939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1714608, while the sum is 50.

The spelling of 203640077939 in words is "two hundred three billion, six hundred forty million, seventy-seven thousand, nine hundred thirty-nine".