12261161255432 has 32 divisors (see below), whose sum is σ = 23029989074400. Its totient is φ = 6119834615424.

The previous prime is 12261161255429. The next prime is 12261161255491. The reversal of 12261161255432 is 23455216116221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12261161255432.

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, 26037044 + ... + 26503772.

It is an arithmetic number, because the mean of its divisors is an integer number (719687158575).

Almost surely, 2^{12261161255432} is an apocalyptic number.

It is an amenable number.

12261161255432 is a deficient number, since it is larger than the sum of its proper divisors (10768827818968).

12261161255432 is a wasteful number, since it uses less digits than its factorization.

12261161255432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472485 (or 472481 counting only the distinct ones).

The product of its digits is 172800, while the sum is 41.

The spelling of 12261161255432 in words is "twelve trillion, two hundred sixty-one billion, one hundred sixty-one million, two hundred fifty-five thousand, four hundred thirty-two".