18456106451 has 2 divisors, whose sum is σ = 18456106452. Its totient is φ = 18456106450.

The previous prime is 18456106447. The next prime is 18456106519. The reversal of 18456106451 is 15460165481.

It is a weak prime.

It is an emirp because it is prime and its reverse (15460165481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18456106451 - 2² = 18456106447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18456106399 and 18456106408.

It is not a weakly prime, because it can be changed into another prime (18456106421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9228053225 + 9228053226.

It is an arithmetic number, because the mean of its divisors is an integer number (9228053226).

Almost surely, 2^18456106451 is an apocalyptic number.

18456106451 is a deficient number, since it is larger than the sum of its proper divisors (1).

18456106451 is an equidigital number, since it uses as much as digits as its factorization.

18456106451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 41.

The spelling of 18456106451 in words is "eighteen billion, four hundred fifty-six million, one hundred six thousand, four hundred fifty-one".