42737691619 has 4 divisors (see below), whose sum is σ = 48843076144. Its totient is φ = 36632307096.

The previous prime is 42737691593. The next prime is 42737691631. The reversal of 42737691619 is 91619673724.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42737691619 - 2¹⁵ = 42737658851 is a prime.

It is a super-2 number, since 2×42737691619² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42737691619.

It is not an unprimeable number, because it can be changed into a prime (42737691679) 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 3 ways as a sum of consecutive naturals, for example, 3052692252 + ... + 3052692265.

It is an arithmetic number, because the mean of its divisors is an integer number (12210769036).

Almost surely, 2^42737691619 is an apocalyptic number.

42737691619 is a deficient number, since it is larger than the sum of its proper divisors (6105384525).

42737691619 is an equidigital number, since it uses as much as digits as its factorization.

42737691619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6105384524.

The product of its digits is 3429216, while the sum is 55.

The spelling of 42737691619 in words is "forty-two billion, seven hundred thirty-seven million, six hundred ninety-one thousand, six hundred nineteen".