39918738811 has 6 divisors (see below), whose sum is σ = 46436083980. Its totient is φ = 34216061796.

The previous prime is 39918738763. The next prime is 39918738829. The reversal of 39918738811 is 11883781993.

It is not a de Polignac number, because 39918738811 - 2¹¹ = 39918736763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39918738011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 407334021 + ... + 407334118.

It is an arithmetic number, because the mean of its divisors is an integer number (7739347330).

Almost surely, 2^39918738811 is an apocalyptic number.

39918738811 is a deficient number, since it is larger than the sum of its proper divisors (6517345169).

39918738811 is an equidigital number, since it uses as much as digits as its factorization.

39918738811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814668153 (or 814668146 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 58.

The spelling of 39918738811 in words is "thirty-nine billion, nine hundred eighteen million, seven hundred thirty-eight thousand, eight hundred eleven".