12157156149 has 8 divisors (see below), whose sum is σ = 16768491360. Its totient is φ = 7825295856.

The previous prime is 12157156147. The next prime is 12157156171. The reversal of 12157156149 is 94165175121.

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

It is not a de Polignac number, because 12157156149 - 2¹ = 12157156147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12157156149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12157156147) 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, 69868627 + ... + 69868800.

It is an arithmetic number, because the mean of its divisors is an integer number (2096061420).

Almost surely, 2^12157156149 is an apocalyptic number.

It is an amenable number.

12157156149 is a deficient number, since it is larger than the sum of its proper divisors (4611335211).

12157156149 is a wasteful number, since it uses less digits than its factorization.

12157156149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139737459.

The product of its digits is 75600, while the sum is 42.

The spelling of 12157156149 in words is "twelve billion, one hundred fifty-seven million, one hundred fifty-six thousand, one hundred forty-nine".