42663993138 has 32 divisors (see below), whose sum is σ = 102101865600. Its totient is φ = 13127382288.

The previous prime is 42663993131. The next prime is 42663993143. The reversal of 42663993138 is 83139936624.

It is a super-2 number, since 2×42663993138² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (42663993131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30386758 + ... + 30388161.

It is an arithmetic number, because the mean of its divisors is an integer number (3190683300).

Almost surely, 2^42663993138 is an apocalyptic number.

42663993138 is an abundant number, since it is smaller than the sum of its proper divisors (59437872462).

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

42663993138 is a wasteful number, since it uses less digits than its factorization.

42663993138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60774943 (or 60774937 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 54.

The spelling of 42663993138 in words is "forty-two billion, six hundred sixty-three million, nine hundred ninety-three thousand, one hundred thirty-eight".