40142252651 has 2 divisors, whose sum is σ = 40142252652. Its totient is φ = 40142252650.

The previous prime is 40142252599. The next prime is 40142252663. The reversal of 40142252651 is 15625224104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40142252651 - 2²² = 40138058347 is a prime.

It is a super-2 number, since 2×40142252651² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40142254651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20071126325 + 20071126326.

It is an arithmetic number, because the mean of its divisors is an integer number (20071126326).

Almost surely, 2^40142252651 is an apocalyptic number.

40142252651 is a deficient number, since it is larger than the sum of its proper divisors (1).

40142252651 is an equidigital number, since it uses as much as digits as its factorization.

40142252651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 40142252651 its reverse (15625224104), we get a palindrome (55767476755).

The spelling of 40142252651 in words is "forty billion, one hundred forty-two million, two hundred fifty-two thousand, six hundred fifty-one".