63726742187 has 2 divisors, whose sum is σ = 63726742188. Its totient is φ = 63726742186.

The previous prime is 63726742141. The next prime is 63726742241. The reversal of 63726742187 is 78124762736.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63726742187 - 2²² = 63722547883 is a prime.

It is a super-2 number, since 2×63726742187² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63726742127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31863371093 + 31863371094.

It is an arithmetic number, because the mean of its divisors is an integer number (31863371094).

Almost surely, 2^63726742187 is an apocalyptic number.

63726742187 is a deficient number, since it is larger than the sum of its proper divisors (1).

63726742187 is an equidigital number, since it uses as much as digits as its factorization.

63726742187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4741632, while the sum is 53.

The spelling of 63726742187 in words is "sixty-three billion, seven hundred twenty-six million, seven hundred forty-two thousand, one hundred eighty-seven".