12261045360 has 80 divisors (see below), whose sum is σ = 38026628640. Its totient is φ = 3268116480.

The previous prime is 12261045353. The next prime is 12261045361. The reversal of 12261045360 is 6354016221.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12261045361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 575376 + ... + 596304.

It is an arithmetic number, because the mean of its divisors is an integer number (475332858).

Almost surely, 2^12261045360 is an apocalyptic number.

12261045360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12261045360 is an abundant number, since it is smaller than the sum of its proper divisors (25765583280).

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

12261045360 is a wasteful number, since it uses less digits than its factorization.

12261045360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23386 (or 23380 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 12261045360 in words is "twelve billion, two hundred sixty-one million, forty-five thousand, three hundred sixty".