12601020156 has 24 divisors (see below), whose sum is σ = 29419259520. Its totient is φ = 4197928752.

The previous prime is 12601020127. The next prime is 12601020163. The reversal of 12601020156 is 65102010621.

It is a congruent number.

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, 279576 + ... + 321503.

It is an arithmetic number, because the mean of its divisors is an integer number (1225802480).

Almost surely, 2^12601020156 is an apocalyptic number.

It is an amenable number.

12601020156 is an abundant number, since it is smaller than the sum of its proper divisors (16818239364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12601020156 is a wasteful number, since it uses less digits than its factorization.

12601020156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602833 (or 602831 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 12601020156 its reverse (65102010621), we get a palindrome (77703030777).

The spelling of 12601020156 in words is "twelve billion, six hundred one million, twenty thousand, one hundred fifty-six".