13156145971 has 8 divisors (see below), whose sum is σ = 13291124688. Its totient is φ = 13021260000.

The previous prime is 13156145923. The next prime is 13156146007. The reversal of 13156145971 is 17954165131.

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

It is a cyclic number.

It is not a de Polignac number, because 13156145971 - 2¹⁷ = 13156014899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13156145911) 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, 282481 + ... + 325741.

It is an arithmetic number, because the mean of its divisors is an integer number (1661390586).

Almost surely, 2^13156145971 is an apocalyptic number.

13156145971 is a deficient number, since it is larger than the sum of its proper divisors (134978717).

13156145971 is a wasteful number, since it uses less digits than its factorization.

13156145971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46373.

The product of its digits is 113400, while the sum is 43.

The spelling of 13156145971 in words is "thirteen billion, one hundred fifty-six million, one hundred forty-five thousand, nine hundred seventy-one".