40220373187 has 4 divisors (see below), whose sum is σ = 41076125856. Its totient is φ = 39364620520.

The previous prime is 40220373169. The next prime is 40220373191. The reversal of 40220373187 is 78137302204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40220373187 - 2¹⁹ = 40219848899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40220173187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427876264 + ... + 427876357.

It is an arithmetic number, because the mean of its divisors is an integer number (10269031464).

Almost surely, 2^40220373187 is an apocalyptic number.

40220373187 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

40220373187 is a deficient number, since it is larger than the sum of its proper divisors (855752669).

40220373187 is an equidigital number, since it uses as much as digits as its factorization.

40220373187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855752668.

The product of its (nonzero) digits is 56448, while the sum is 37.

The spelling of 40220373187 in words is "forty billion, two hundred twenty million, three hundred seventy-three thousand, one hundred eighty-seven".