40206688842 has 64 divisors (see below), whose sum is σ = 87232763520. Its totient is φ = 12311149824.

The previous prime is 40206688813. The next prime is 40206688843. The reversal of 40206688842 is 24888660204.

It is a junction number, because it is equal to n+sod(n) for n = 40206688791 and 40206688800.

It is not an unprimeable number, because it can be changed into a prime (40206688843) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1219608 + ... + 1252140.

It is an arithmetic number, because the mean of its divisors is an integer number (1363011930).

Almost surely, 2^40206688842 is an apocalyptic number.

40206688842 is an abundant number, since it is smaller than the sum of its proper divisors (47026074678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40206688842 is a wasteful number, since it uses less digits than its factorization.

40206688842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32887.

The product of its (nonzero) digits is 1179648, while the sum is 48.

The spelling of 40206688842 in words is "forty billion, two hundred six million, six hundred eighty-eight thousand, eight hundred forty-two".