40518371667 has 16 divisors (see below), whose sum is σ = 54933409440. Its totient is φ = 26561145600.

The previous prime is 40518371653. The next prime is 40518371711. The reversal of 40518371667 is 76617381504.

40518371667 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 40518371667 - 2²⁴ = 40501594451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40518371617) 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, 370884 + ... + 467537.

It is an arithmetic number, because the mean of its divisors is an integer number (3433338090).

Almost surely, 2^40518371667 is an apocalyptic number.

40518371667 is a deficient number, since it is larger than the sum of its proper divisors (14415037773).

40518371667 is a wasteful number, since it uses less digits than its factorization.

40518371667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838694.

The product of its (nonzero) digits is 846720, while the sum is 48.

It can be divided in two parts, 4051837 and 1667, that added together give a palindrome (4053504).

The spelling of 40518371667 in words is "forty billion, five hundred eighteen million, three hundred seventy-one thousand, six hundred sixty-seven".