40126541637631 has 2 divisors, whose sum is σ = 40126541637632. Its totient is φ = 40126541637630.

The previous prime is 40126541637619. The next prime is 40126541637643. The reversal of 40126541637631 is 13673614562104.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (40126541637619) and next prime (40126541637643).

It is a cyclic number.

It is not a de Polignac number, because 40126541637631 - 2²⁵ = 40126508083199 is a prime.

It is a super-2 number, since 2×40126541637631² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40126541637601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20063270818815 + 20063270818816.

It is an arithmetic number, because the mean of its divisors is an integer number (20063270818816).

Almost surely, 2^{40126541637631} is an apocalyptic number.

40126541637631 is a deficient number, since it is larger than the sum of its proper divisors (1).

40126541637631 is an equidigital number, since it uses as much as digits as its factorization.

40126541637631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 49.

The spelling of 40126541637631 in words is "forty trillion, one hundred twenty-six billion, five hundred forty-one million, six hundred thirty-seven thousand, six hundred thirty-one".