39945504011 has 16 divisors (see below), whose sum is σ = 45870819840. Its totient is φ = 34075261440.

The previous prime is 39945504007. The next prime is 39945504023. The reversal of 39945504011 is 11040554993.

It is a cyclic number.

It is not a de Polignac number, because 39945504011 - 2² = 39945504007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39945504011.

It is not an unprimeable number, because it can be changed into a prime (39945504041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1321970 + ... + 1351848.

It is an arithmetic number, because the mean of its divisors is an integer number (2866926240).

Almost surely, 2^39945504011 is an apocalyptic number.

39945504011 is a deficient number, since it is larger than the sum of its proper divisors (5925315829).

39945504011 is a wasteful number, since it uses less digits than its factorization.

39945504011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30794.

The product of its (nonzero) digits is 97200, while the sum is 41.

The spelling of 39945504011 in words is "thirty-nine billion, nine hundred forty-five million, five hundred four thousand, eleven".