18754532655 has 16 divisors (see below), whose sum is σ = 30499175904. Its totient is φ = 9838442880.

The previous prime is 18754532647. The next prime is 18754532659. The reversal of 18754532655 is 55623545781.

It is not a de Polignac number, because 18754532655 - 2³ = 18754532647 is a prime.

It is a super-2 number, since 2×18754532655² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18754532598 and 18754532607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18754532659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10247464 + ... + 10249293.

It is an arithmetic number, because the mean of its divisors is an integer number (1906198494).

Almost surely, 2^18754532655 is an apocalyptic number.

18754532655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18754532655 is a deficient number, since it is larger than the sum of its proper divisors (11744643249).

18754532655 is a wasteful number, since it uses less digits than its factorization.

18754532655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20496826.

The product of its digits is 5040000, while the sum is 51.

The spelling of 18754532655 in words is "eighteen billion, seven hundred fifty-four million, five hundred thirty-two thousand, six hundred fifty-five".