14855618020 has 24 divisors (see below), whose sum is σ = 31199838264. Its totient is φ = 5941668096.

The previous prime is 14855618017. The next prime is 14855618021. The reversal of 14855618020 is 2081655841.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 828058176 + 14027559844 = 28776^2 + 118438^2 .

It is a super-2 number, since 2×14855618020² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (14855618021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217534 + ... + 277546.

It is an arithmetic number, because the mean of its divisors is an integer number (1299993261).

Almost surely, 2^14855618020 is an apocalyptic number.

14855618020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14855618020 is an abundant number, since it is smaller than the sum of its proper divisors (16344220244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

14855618020 is a wasteful number, since it uses less digits than its factorization.

14855618020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72399 (or 72397 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 40.

The spelling of 14855618020 in words is "fourteen billion, eight hundred fifty-five million, six hundred eighteen thousand, twenty".