42665490956 has 24 divisors (see below), whose sum is σ = 81752885760. Its totient is φ = 19321837200.

The previous prime is 42665490953. The next prime is 42665490961. The reversal of 42665490956 is 65909456624.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42665490953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1777136 + ... + 1800983.

It is an arithmetic number, because the mean of its divisors is an integer number (3406370240).

Almost surely, 2^42665490956 is an apocalyptic number.

It is an amenable number.

42665490956 is a deficient number, since it is larger than the sum of its proper divisors (39087394804).

42665490956 is a wasteful number, since it uses less digits than its factorization.

42665490956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3578405 (or 3578403 counting only the distinct ones).

The product of its (nonzero) digits is 13996800, while the sum is 56.

The spelling of 42665490956 in words is "forty-two billion, six hundred sixty-five million, four hundred ninety thousand, nine hundred fifty-six".