40030111065 has 32 divisors (see below), whose sum is σ = 73908596736. Its totient is φ = 18121809600.

The previous prime is 40030111061. The next prime is 40030111067. The reversal of 40030111065 is 56011103004.

40030111065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40030111065 - 2² = 40030111061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40030111061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1839861 + ... + 1861490.

It is an arithmetic number, because the mean of its divisors is an integer number (2309643648).

Almost surely, 2^40030111065 is an apocalyptic number.

It is an amenable number.

40030111065 is a deficient number, since it is larger than the sum of its proper divisors (33878485671).

40030111065 is a wasteful number, since it uses less digits than its factorization.

40030111065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3701469.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 40030111065 its reverse (56011103004), we get a palindrome (96041214069).

The spelling of 40030111065 in words is "forty billion, thirty million, one hundred eleven thousand, sixty-five".