18750720127 has 2 divisors, whose sum is σ = 18750720128. Its totient is φ = 18750720126.

The previous prime is 18750720083. The next prime is 18750720139. The reversal of 18750720127 is 72102705781.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18750720127 - 2¹⁵ = 18750687359 is a prime.

It is a super-2 number, since 2×18750720127² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18750720127.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18750720187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9375360063 + 9375360064.

It is an arithmetic number, because the mean of its divisors is an integer number (9375360064).

Almost surely, 2^18750720127 is an apocalyptic number.

18750720127 is a deficient number, since it is larger than the sum of its proper divisors (1).

18750720127 is an equidigital number, since it uses as much as digits as its factorization.

18750720127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54880, while the sum is 40.

The spelling of 18750720127 in words is "eighteen billion, seven hundred fifty million, seven hundred twenty thousand, one hundred twenty-seven".