156641543868 has 48 divisors (see below), whose sum is σ = 378689955840. Its totient is φ = 50341656000.

The previous prime is 156641543857. The next prime is 156641543909. The reversal of 156641543868 is 868345146651.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 682608 + ... + 882743.

It is an arithmetic number, because the mean of its divisors is an integer number (7889374080).

Almost surely, 2^156641543868 is an apocalyptic number.

It is an amenable number.

156641543868 is an abundant number, since it is smaller than the sum of its proper divisors (222048411972).

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

156641543868 is a wasteful number, since it uses less digits than its factorization.

156641543868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565658 (or 1565656 counting only the distinct ones).

The product of its digits is 16588800, while the sum is 57.

The spelling of 156641543868 in words is "one hundred fifty-six billion, six hundred forty-one million, five hundred forty-three thousand, eight hundred sixty-eight".