42718216631 has 4 divisors (see below), whose sum is σ = 42736897632. Its totient is φ = 42699535632.

The previous prime is 42718216621. The next prime is 42718216649. The reversal of 42718216631 is 13661281724.

42718216631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 42718216631 - 2¹⁰ = 42718215607 is a prime.

It is a super-2 number, since 2×42718216631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42718216621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9337070 + ... + 9341643.

It is an arithmetic number, because the mean of its divisors is an integer number (10684224408).

Almost surely, 2^42718216631 is an apocalyptic number.

42718216631 is a deficient number, since it is larger than the sum of its proper divisors (18681001).

42718216631 is a wasteful number, since it uses less digits than its factorization.

42718216631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18681000.

The product of its digits is 96768, while the sum is 41.

The spelling of 42718216631 in words is "forty-two billion, seven hundred eighteen million, two hundred sixteen thousand, six hundred thirty-one".