12154975860 has 216 divisors, whose sum is σ = 37106868960. Its totient is φ = 2971441152.

The previous prime is 12154975841. The next prime is 12154975901. The reversal of 12154975860 is 6857945121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 111513486 + ... + 111513594.

It is an arithmetic number, because the mean of its divisors is an integer number (171791060).

Almost surely, 2^12154975860 is an apocalyptic number.

12154975860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12154975860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18553434480).

12154975860 is an abundant number, since it is smaller than the sum of its proper divisors (24951893100).

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

12154975860 is a wasteful number, since it uses less digits than its factorization.

12154975860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 48.

The spelling of 12154975860 in words is "twelve billion, one hundred fifty-four million, nine hundred seventy-five thousand, eight hundred sixty".