40142525055991 has 2 divisors, whose sum is σ = 40142525055992. Its totient is φ = 40142525055990.

The previous prime is 40142525055973. The next prime is 40142525056079. The reversal of 40142525055991 is 19955052524104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40142525055991 - 2¹³ = 40142525047799 is a prime.

It is a super-2 number, since 2×40142525055991² (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 (40142525055911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20071262527995 + 20071262527996.

It is an arithmetic number, because the mean of its divisors is an integer number (20071262527996).

Almost surely, 2^{40142525055991} is an apocalyptic number.

40142525055991 is a deficient number, since it is larger than the sum of its proper divisors (1).

40142525055991 is an equidigital number, since it uses as much as digits as its factorization.

40142525055991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240000, while the sum is 52.

The spelling of 40142525055991 in words is "forty trillion, one hundred forty-two billion, five hundred twenty-five million, fifty-five thousand, nine hundred ninety-one".