40217638502 has 4 divisors (see below), whose sum is σ = 60326457756. Its totient is φ = 20108819250.

The previous prime is 40217638499. The next prime is 40217638507. The reversal of 40217638502 is 20583671204.

It is a happy number.

40217638502 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40217638507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10054409624 + ... + 10054409627.

It is an arithmetic number, because the mean of its divisors is an integer number (15081614439).

Almost surely, 2^40217638502 is an apocalyptic number.

40217638502 is a deficient number, since it is larger than the sum of its proper divisors (20108819254).

40217638502 is a wasteful number, since it uses less digits than its factorization.

40217638502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20108819253.

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 40217638502 in words is "forty billion, two hundred seventeen million, six hundred thirty-eight thousand, five hundred two".