42641931905 has 16 divisors (see below), whose sum is σ = 54165862080. Its totient is φ = 32171229888.

The previous prime is 42641931901. The next prime is 42641931949. The reversal of 42641931905 is 50913914624.

42641931905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 42641931905 - 2² = 42641931901 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42641931901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3413327 + ... + 3425796.

It is an arithmetic number, because the mean of its divisors is an integer number (3385366380).

Almost surely, 2^42641931905 is an apocalyptic number.

It is an amenable number.

42641931905 is a deficient number, since it is larger than the sum of its proper divisors (11523930175).

42641931905 is a wasteful number, since it uses less digits than its factorization.

42641931905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6839200.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 42641931905 in words is "forty-two billion, six hundred forty-one million, nine hundred thirty-one thousand, nine hundred five".