40020511215 has 16 divisors (see below), whose sum is σ = 64462572000. Its totient is φ = 21201021312.

The previous prime is 40020511211. The next prime is 40020511229. The reversal of 40020511215 is 51211502004.

40020511215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40020511215 - 2² = 40020511211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40020511191 and 40020511200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40020511211) 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, 8950900 + ... + 8955369.

It is an arithmetic number, because the mean of its divisors is an integer number (4028910750).

Almost surely, 2^40020511215 is an apocalyptic number.

40020511215 is a deficient number, since it is larger than the sum of its proper divisors (24442060785).

40020511215 is a wasteful number, since it uses less digits than its factorization.

40020511215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17906426.

The product of its (nonzero) digits is 400, while the sum is 21.

The spelling of 40020511215 in words is "forty billion, twenty million, five hundred eleven thousand, two hundred fifteen".