42164726661 has 40 divisors (see below), whose sum is σ = 63306735360. Its totient is φ = 27967379328.

The previous prime is 42164726651. The next prime is 42164726687. The reversal of 42164726661 is 16662746124.

42164726661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42164726661 - 2⁷ = 42164726533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42164726651) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 23128396 + ... + 23130218.

It is an arithmetic number, because the mean of its divisors is an integer number (1582668384).

Almost surely, 2^42164726661 is an apocalyptic number.

It is an amenable number.

42164726661 is a deficient number, since it is larger than the sum of its proper divisors (21142008699).

42164726661 is a wasteful number, since it uses less digits than its factorization.

42164726661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3127 (or 3118 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The spelling of 42164726661 in words is "forty-two billion, one hundred sixty-four million, seven hundred twenty-six thousand, six hundred sixty-one".