12349654780 has 12 divisors (see below), whose sum is σ = 25934275080. Its totient is φ = 4939861904.

The previous prime is 12349654711. The next prime is 12349654781. The reversal of 12349654780 is 8745694321.

It is a happy number.

It is a super-3 number, since 3×12349654780³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12349654781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308741350 + ... + 308741389.

It is an arithmetic number, because the mean of its divisors is an integer number (2161189590).

It is a 1-persistent number, because it is pandigital, but 2⋅12349654780 = 24699309560 is not.

Almost surely, 2^12349654780 is an apocalyptic number.

12349654780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12349654780 is an abundant number, since it is smaller than the sum of its proper divisors (13584620300).

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

12349654780 is a wasteful number, since it uses less digits than its factorization.

12349654780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617482748 (or 617482746 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 12349654780 in words is "twelve billion, three hundred forty-nine million, six hundred fifty-four thousand, seven hundred eighty".