40111232505 has 32 divisors (see below), whose sum is σ = 69789734784. Its totient is φ = 19590091776.

The previous prime is 40111232501. The next prime is 40111232509. The reversal of 40111232505 is 50523211104.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40111232501) and next prime (40111232509).

It is not a de Polignac number, because 40111232505 - 2² = 40111232501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40111232501) 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, 2116227 + ... + 2135096.

It is an arithmetic number, because the mean of its divisors is an integer number (2180929212).

Almost surely, 2^40111232505 is an apocalyptic number.

It is an amenable number.

40111232505 is a deficient number, since it is larger than the sum of its proper divisors (29678502279).

40111232505 is a wasteful number, since it uses less digits than its factorization.

40111232505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4251385.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 40111232505 its reverse (50523211104), we get a palindrome (90634443609).

The spelling of 40111232505 in words is "forty billion, one hundred eleven million, two hundred thirty-two thousand, five hundred five".