14925971820 has 24 divisors (see below), whose sum is σ = 41792721264. Its totient is φ = 3980259136.

The previous prime is 14925971779. The next prime is 14925971821. The reversal of 14925971820 is 2817952941.

It is a happy number.

It is a super-2 number, since 2×14925971820² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 14925971820.

It is not an unprimeable number, because it can be changed into a prime (14925971821) 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, 124383039 + ... + 124383158.

It is an arithmetic number, because the mean of its divisors is an integer number (1741363386).

Almost surely, 2^14925971820 is an apocalyptic number.

14925971820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14925971820 is an abundant number, since it is smaller than the sum of its proper divisors (26866749444).

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

14925971820 is a wasteful number, since it uses less digits than its factorization.

14925971820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248766209 (or 248766207 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 48.

The spelling of 14925971820 in words is "fourteen billion, nine hundred twenty-five million, nine hundred seventy-one thousand, eight hundred twenty".