12259999557380 has 24 divisors (see below), whose sum is σ = 25747262419032. Its totient is φ = 4903759185152.

The previous prime is 12259999557347. The next prime is 12259999557397. The reversal of 12259999557380 is 8375599995221.

It can be written as a sum of positive squares in 4 ways, for example, as 458534831104 + 11801464726276 = 677152^2 + 3435326^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12259999557298 and 12259999557307.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14621807 + ... + 15437526.

It is an arithmetic number, because the mean of its divisors is an integer number (1072802600793).

Almost surely, 2^{12259999557380} is an apocalyptic number.

12259999557380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12259999557380 is an abundant number, since it is smaller than the sum of its proper divisors (13487262861652).

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

12259999557380 is a wasteful number, since it uses less digits than its factorization.

12259999557380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30079735 (or 30079733 counting only the distinct ones).

The product of its (nonzero) digits is 551124000, while the sum is 74.

The spelling of 12259999557380 in words is "twelve trillion, two hundred fifty-nine billion, nine hundred ninety-nine million, five hundred fifty-seven thousand, three hundred eighty".