40115210220 has 72 divisors (see below), whose sum is σ = 121702954464. Its totient is φ = 10695618048.

The previous prime is 40115210129. The next prime is 40115210257. The reversal of 40115210220 is 2201251104.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 40115210193 and 40115210202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1354612 + ... + 1383908.

It is an arithmetic number, because the mean of its divisors is an integer number (1690318812).

Almost surely, 2^40115210220 is an apocalyptic number.

It is an amenable number.

40115210220 is an abundant number, since it is smaller than the sum of its proper divisors (81587744244).

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

40115210220 is a wasteful number, since it uses less digits than its factorization.

40115210220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36919 (or 36914 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

Adding to 40115210220 its reverse (2201251104), we get a palindrome (42316461324).

The spelling of 40115210220 in words is "forty billion, one hundred fifteen million, two hundred ten thousand, two hundred twenty".