156169863364866 has 128 divisors (see below), whose sum is σ = 356781780504576. Its totient is φ = 45204807732480.

The previous prime is 156169863364813. The next prime is 156169863364877. The reversal of 156169863364866 is 668463368961651.

It is a Harshad number since it is a multiple of its sum of digits (78).

It is a junction number, because it is equal to n+sod(n) for n = 156169863364791 and 156169863364800.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1121300565 + ... + 1121439831.

It is an arithmetic number, because the mean of its divisors is an integer number (2787357660192).

Almost surely, 2^{156169863364866} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156169863364866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178390890252288).

156169863364866 is an abundant number, since it is smaller than the sum of its proper divisors (200611917139710).

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

156169863364866 is a wasteful number, since it uses less digits than its factorization.

156169863364866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149616.

The product of its digits is 4837294080, while the sum is 78.

The spelling of 156169863364866 in words is "one hundred fifty-six trillion, one hundred sixty-nine billion, eight hundred sixty-three million, three hundred sixty-four thousand, eight hundred sixty-six".