42961385918 has 16 divisors (see below), whose sum is σ = 70304041584. Its totient is φ = 19526904960.

The previous prime is 42961385917. The next prime is 42961385947. The reversal of 42961385918 is 81958316924.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42961385917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551696 + ... + 624732.

It is an arithmetic number, because the mean of its divisors is an integer number (4394002599).

Almost surely, 2^42961385918 is an apocalyptic number.

42961385918 is a deficient number, since it is larger than the sum of its proper divisors (27342655666).

42961385918 is a wasteful number, since it uses less digits than its factorization.

42961385918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99787.

The product of its digits is 3732480, while the sum is 56.

The spelling of 42961385918 in words is "forty-two billion, nine hundred sixty-one million, three hundred eighty-five thousand, nine hundred eighteen".