12259777087500 has 144 divisors (see below), whose sum is σ = 35759503745280. Its totient is φ = 3268898200000.

The previous prime is 12259777087487. The next prime is 12259777087543. The reversal of 12259777087500 is 578077795221.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 513400561 + ... + 513424439.

It is an arithmetic number, because the mean of its divisors is an integer number (248329887120).

Almost surely, 2^{12259777087500} is an apocalyptic number.

12259777087500 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 12259777087500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17879751872640).

12259777087500 is an abundant number, since it is smaller than the sum of its proper divisors (23499726657780).

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

12259777087500 is a wasteful number, since it uses less digits than its factorization.

12259777087500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37602 (or 37580 counting only the distinct ones).

The product of its (nonzero) digits is 17287200, while the sum is 60.

The spelling of 12259777087500 in words is "twelve trillion, two hundred fifty-nine billion, seven hundred seventy-seven million, eighty-seven thousand, five hundred".