42665903616 has 80 divisors (see below), whose sum is σ = 129902471424. Its totient is φ = 12190255104.

The previous prime is 42665903593. The next prime is 42665903639. The reversal of 42665903616 is 61630956624.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42665903593) and next prime (42665903639).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1973340 + ... + 1994843.

Almost surely, 2^42665903616 is an apocalyptic number.

It is an amenable number.

42665903616 is an abundant number, since it is smaller than the sum of its proper divisors (87236567808).

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

42665903616 is an equidigital number, since it uses as much as digits as its factorization.

42665903616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3968211 (or 3968195 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 48.

The spelling of 42665903616 in words is "forty-two billion, six hundred sixty-five million, nine hundred three thousand, six hundred sixteen".