42718209261 has 72 divisors (see below), whose sum is σ = 73415881440. Its totient is φ = 22008115584.

The previous prime is 42718209251. The next prime is 42718209283. The reversal of 42718209261 is 16290281724.

42718209261 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 42718209261 - 2⁶ = 42718209197 is a prime.

It is a super-2 number, since 2×42718209261² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42718209251) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1048255 + ... + 1088243.

It is an arithmetic number, because the mean of its divisors is an integer number (1019665020).

Almost surely, 2^42718209261 is an apocalyptic number.

It is an amenable number.

42718209261 is a deficient number, since it is larger than the sum of its proper divisors (30697672179).

42718209261 is a wasteful number, since it uses less digits than its factorization.

42718209261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40075 (or 40055 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 42718209261 in words is "forty-two billion, seven hundred eighteen million, two hundred nine thousand, two hundred sixty-one".