155789668804 has 135 divisors (see below), whose sum is σ = 350359073085. Its totient is φ = 60436770240.

The previous prime is 155789668753. The next prime is 155789668877. The reversal of 155789668804 is 408866987551.

The square root of 155789668804 is 394702.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 31637736900 + 124151931904 = 177870^2 + 352352^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 155789668804.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 668625072 + ... + 668625304.

Almost surely, 2^155789668804 is an apocalyptic number.

155789668804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

155789668804 is the 394702-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155789668804

155789668804 is an abundant number, since it is smaller than the sum of its proper divisors (194569404281).

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

155789668804 is an frugal number, since it uses more digits than its factorization.

155789668804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 116121600, while the sum is 67.

The spelling of 155789668804 in words is "one hundred fifty-five billion, seven hundred eighty-nine million, six hundred sixty-eight thousand, eight hundred four".