18128701651 has 2 divisors, whose sum is σ = 18128701652. Its totient is φ = 18128701650.

The previous prime is 18128701627. The next prime is 18128701663. The reversal of 18128701651 is 15610782181.

It is a strong prime.

It is an emirp because it is prime and its reverse (15610782181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18128701651 - 2¹⁹ = 18128177363 is a prime.

It is not a weakly prime, because it can be changed into another prime (18128701601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9064350825 + 9064350826.

It is an arithmetic number, because the mean of its divisors is an integer number (9064350826).

Almost surely, 2^18128701651 is an apocalyptic number.

18128701651 is a deficient number, since it is larger than the sum of its proper divisors (1).

18128701651 is an equidigital number, since it uses as much as digits as its factorization.

18128701651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 40.

The spelling of 18128701651 in words is "eighteen billion, one hundred twenty-eight million, seven hundred one thousand, six hundred fifty-one".