40218018837 has 16 divisors (see below), whose sum is σ = 53730915840. Its totient is φ = 26758606832.

The previous prime is 40218018833. The next prime is 40218018839. The reversal of 40218018837 is 73881081204.

It is a cyclic number.

It is not a de Polignac number, because 40218018837 - 2² = 40218018833 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40218018833) 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, 7332298 + ... + 7337780.

It is an arithmetic number, because the mean of its divisors is an integer number (3358182240).

Almost surely, 2^40218018837 is an apocalyptic number.

It is an amenable number.

40218018837 is a deficient number, since it is larger than the sum of its proper divisors (13512897003).

40218018837 is a wasteful number, since it uses less digits than its factorization.

40218018837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9912.

The product of its (nonzero) digits is 86016, while the sum is 42.

The spelling of 40218018837 in words is "forty billion, two hundred eighteen million, eighteen thousand, eight hundred thirty-seven".