12061147157 has 4 divisors (see below), whose sum is σ = 12265573440. Its totient is φ = 11856720876.

The previous prime is 12061147127. The next prime is 12061147159. The reversal of 12061147157 is 75174116021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12061147157 - 2⁸ = 12061146901 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 (12061147159) 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, 102213053 + ... + 102213170.

It is an arithmetic number, because the mean of its divisors is an integer number (3066393360).

Almost surely, 2^12061147157 is an apocalyptic number.

It is an amenable number.

12061147157 is a deficient number, since it is larger than the sum of its proper divisors (204426283).

12061147157 is an equidigital number, since it uses as much as digits as its factorization.

12061147157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204426282.

The product of its (nonzero) digits is 11760, while the sum is 35.

The spelling of 12061147157 in words is "twelve billion, sixty-one million, one hundred forty-seven thousand, one hundred fifty-seven".