18045415527 has 32 divisors (see below), whose sum is σ = 25792266240. Its totient is φ = 11182594560.

The previous prime is 18045415523. The next prime is 18045415537. The reversal of 18045415527 is 72551454081.

It is a happy number.

It is not a de Polignac number, because 18045415527 - 2² = 18045415523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18045415523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2039002 + ... + 2047832.

It is an arithmetic number, because the mean of its divisors is an integer number (806008320).

Almost surely, 2^18045415527 is an apocalyptic number.

18045415527 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

18045415527 is a deficient number, since it is larger than the sum of its proper divisors (7746850713).

18045415527 is a wasteful number, since it uses less digits than its factorization.

18045415527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9343.

The product of its (nonzero) digits is 224000, while the sum is 42.

The spelling of 18045415527 in words is "eighteen billion, forty-five million, four hundred fifteen thousand, five hundred twenty-seven".