40005405111 has 24 divisors (see below), whose sum is σ = 62059703040. Its totient is φ = 22856362032.

The previous prime is 40005405071. The next prime is 40005405119. The reversal of 40005405111 is 11150450004.

It is not a de Polignac number, because 40005405111 - 2³³ = 31415470519 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40005405119) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1003420 + ... + 1042526.

It is an arithmetic number, because the mean of its divisors is an integer number (2585820960).

Almost surely, 2^40005405111 is an apocalyptic number.

40005405111 is a deficient number, since it is larger than the sum of its proper divisors (22054297929).

40005405111 is a wasteful number, since it uses less digits than its factorization.

40005405111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46083 (or 46076 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 40005405111 its reverse (11150450004), we get a palindrome (51155855115).

The spelling of 40005405111 in words is "forty billion, five million, four hundred five thousand, one hundred eleven".