14147521820 has 24 divisors (see below), whose sum is σ = 30734272800. Its totient is φ = 5463870272.

The previous prime is 14147521799. The next prime is 14147521823. The reversal of 14147521820 is 2812574141.

It is a super-2 number, since 2×14147521820² (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 (14147521823) 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, 12195560 + ... + 12196719.

It is an arithmetic number, because the mean of its divisors is an integer number (1280594700).

Almost surely, 2^14147521820 is an apocalyptic number.

14147521820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14147521820 is an abundant number, since it is smaller than the sum of its proper divisors (16586750980).

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

14147521820 is a wasteful number, since it uses less digits than its factorization.

14147521820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24392317 (or 24392315 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

The spelling of 14147521820 in words is "fourteen billion, one hundred forty-seven million, five hundred twenty-one thousand, eight hundred twenty".