42681650399 has 4 divisors (see below), whose sum is σ = 42773046264. Its totient is φ = 42590254536.

The previous prime is 42681650381. The next prime is 42681650411. The reversal of 42681650399 is 99305618624.

42681650399 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 cyclic number.

It is not a de Polignac number, because 42681650399 - 2³² = 38386683103 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42681650399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42681650359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45697232 + ... + 45698165.

It is an arithmetic number, because the mean of its divisors is an integer number (10693261566).

Almost surely, 2^42681650399 is an apocalyptic number.

42681650399 is a deficient number, since it is larger than the sum of its proper divisors (91395865).

42681650399 is an equidigital number, since it uses as much as digits as its factorization.

42681650399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91395864.

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 42681650399 in words is "forty-two billion, six hundred eighty-one million, six hundred fifty thousand, three hundred ninety-nine".