40642559999 has 6 divisors (see below), whose sum is σ = 40733481600. Its totient is φ = 40551840896.

The previous prime is 40642559989. The next prime is 40642560001. The reversal of 40642559999 is 99995524604.

It is a happy number.

It is a Cunningham number, because it is equal to 201600²-1.

It is not a de Polignac number, because 40642559999 - 2¹² = 40642555903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40642559989) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100802 + ... + 302400.

It is an arithmetic number, because the mean of its divisors is an integer number (6788913600).

Almost surely, 2^40642559999 is an apocalyptic number.

40642559999 is a deficient number, since it is larger than the sum of its proper divisors (90921601).

40642559999 is an frugal number, since it uses more digits than its factorization.

40642559999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202497 (or 202048 counting only the distinct ones).

The product of its (nonzero) digits is 31492800, while the sum is 62.

The spelling of 40642559999 in words is "forty billion, six hundred forty-two million, five hundred fifty-nine thousand, nine hundred ninety-nine".