40126241561 has 8 divisors (see below), whose sum is σ = 46794451200. Its totient is φ = 34393921044.

The previous prime is 40126241527. The next prime is 40126241563. The reversal of 40126241561 is 16514262104.

It is not a de Polignac number, because 40126241561 - 2²² = 40122047257 is a prime.

It is a super-2 number, since 2×40126241561² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40126241563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58492721 + ... + 58493406.

It is an arithmetic number, because the mean of its divisors is an integer number (5849306400).

Almost surely, 2^40126241561 is an apocalyptic number.

It is an amenable number.

40126241561 is a deficient number, since it is larger than the sum of its proper divisors (6668209639).

40126241561 is an equidigital number, since it uses as much as digits as its factorization.

40126241561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116986148 (or 116986134 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 40126241561 in words is "forty billion, one hundred twenty-six million, two hundred forty-one thousand, five hundred sixty-one".