18651727053 has 12 divisors (see below), whose sum is σ = 27398017920. Its totient is φ = 12223730376.

The previous prime is 18651727043. The next prime is 18651727057. The reversal of 18651727053 is 35072715681.

It is a happy number.

18651727053 is a `hidden beast` number, since 1 + 86 + 517 + 2 + 7 + 0 + 53 = 666.

It is not a de Polignac number, because 18651727053 - 2¹⁶ = 18651661517 is a prime.

It is a super-2 number, since 2×18651727053² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18651727057) 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 in 11 ways as a sum of consecutive naturals, for example, 17562301 + ... + 17563362.

It is an arithmetic number, because the mean of its divisors is an integer number (2283168160).

Almost surely, 2^18651727053 is an apocalyptic number.

It is an amenable number.

18651727053 is a deficient number, since it is larger than the sum of its proper divisors (8746290867).

18651727053 is a wasteful number, since it uses less digits than its factorization.

18651727053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35125728 (or 35125725 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

The spelling of 18651727053 in words is "eighteen billion, six hundred fifty-one million, seven hundred twenty-seven thousand, fifty-three".