40251424387 has 2 divisors, whose sum is σ = 40251424388. Its totient is φ = 40251424386.

The previous prime is 40251424357. The next prime is 40251424439. The reversal of 40251424387 is 78342415204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40251424387 - 2¹¹ = 40251422339 is a prime.

It is not a weakly prime, because it can be changed into another prime (40251424307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20125712193 + 20125712194.

It is an arithmetic number, because the mean of its divisors is an integer number (20125712194).

Almost surely, 2^40251424387 is an apocalyptic number.

40251424387 is a deficient number, since it is larger than the sum of its proper divisors (1).

40251424387 is an equidigital number, since it uses as much as digits as its factorization.

40251424387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 215040, while the sum is 40.

The spelling of 40251424387 in words is "forty billion, two hundred fifty-one million, four hundred twenty-four thousand, three hundred eighty-seven".