40931109505 has 32 divisors (see below), whose sum is σ = 58793091840. Its totient is φ = 26959745280.

The previous prime is 40931109503. The next prime is 40931109509. The reversal of 40931109505 is 50590113904.

It is a happy number.

It is not a de Polignac number, because 40931109505 - 2¹ = 40931109503 is a prime.

It is a super-3 number, since 3×40931109505³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (40931109503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 502165 + ... + 577954.

It is an arithmetic number, because the mean of its divisors is an integer number (1837284120).

Almost surely, 2^40931109505 is an apocalyptic number.

It is an amenable number.

40931109505 is a deficient number, since it is larger than the sum of its proper divisors (17861982335).

40931109505 is a wasteful number, since it uses less digits than its factorization.

40931109505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080201.

The product of its (nonzero) digits is 24300, while the sum is 37.

The spelling of 40931109505 in words is "forty billion, nine hundred thirty-one million, one hundred nine thousand, five hundred five".