40620400187 has 2 divisors, whose sum is σ = 40620400188. Its totient is φ = 40620400186.

The previous prime is 40620400169. The next prime is 40620400193. The reversal of 40620400187 is 78100402604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40620400187 - 2⁸ = 40620399931 is a prime.

It is a super-2 number, since 2×40620400187² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40620400157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20310200093 + 20310200094.

It is an arithmetic number, because the mean of its divisors is an integer number (20310200094).

Almost surely, 2^40620400187 is an apocalyptic number.

40620400187 is a deficient number, since it is larger than the sum of its proper divisors (1).

40620400187 is an equidigital number, since it uses as much as digits as its factorization.

40620400187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 32.

The spelling of 40620400187 in words is "forty billion, six hundred twenty million, four hundred thousand, one hundred eighty-seven".