12061550591 has 8 divisors (see below), whose sum is σ = 12141472080. Its totient is φ = 11981668608.

The previous prime is 12061550539. The next prime is 12061550597. The reversal of 12061550591 is 19505516021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12061550591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12061550597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 843695 + ... + 857871.

It is an arithmetic number, because the mean of its divisors is an integer number (1517684010).

Almost surely, 2^12061550591 is an apocalyptic number.

12061550591 is a deficient number, since it is larger than the sum of its proper divisors (79921489).

12061550591 is a wasteful number, since it uses less digits than its factorization.

12061550591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19753.

The product of its (nonzero) digits is 13500, while the sum is 35.

The spelling of 12061550591 in words is "twelve billion, sixty-one million, five hundred fifty thousand, five hundred ninety-one".