40218648658 has 32 divisors (see below), whose sum is σ = 63958377600. Its totient is φ = 18914841216.

The previous prime is 40218648629. The next prime is 40218648667. The reversal of 40218648658 is 85684681204.

It is a happy number.

40218648658 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3172260 + ... + 3184912.

It is an arithmetic number, because the mean of its divisors is an integer number (1998699300).

Almost surely, 2^40218648658 is an apocalyptic number.

40218648658 is a deficient number, since it is larger than the sum of its proper divisors (23739728942).

40218648658 is a wasteful number, since it uses less digits than its factorization.

40218648658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13266.

The product of its (nonzero) digits is 2949120, while the sum is 52.

The spelling of 40218648658 in words is "forty billion, two hundred eighteen million, six hundred forty-eight thousand, six hundred fifty-eight".