42939995506 has 16 divisors (see below), whose sum is σ = 65635181280. Its totient is φ = 21063085120.

The previous prime is 42939995491. The next prime is 42939995507. The reversal of 42939995506 is 60559993924.

It is not an unprimeable number, because it can be changed into a prime (42939995507) 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, 312631 + ... + 428506.

It is an arithmetic number, because the mean of its divisors is an integer number (4102198830).

Almost surely, 2^42939995506 is an apocalyptic number.

42939995506 is a deficient number, since it is larger than the sum of its proper divisors (22695185774).

42939995506 is a wasteful number, since it uses less digits than its factorization.

42939995506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741689.

The product of its (nonzero) digits is 23619600, while the sum is 61.

The spelling of 42939995506 in words is "forty-two billion, nine hundred thirty-nine million, nine hundred ninety-five thousand, five hundred six".