155536656 has 80 divisors (see below), whose sum is σ = 440352768. Its totient is φ = 46915200.

The previous prime is 155536643. The next prime is 155536663. The reversal of 155536656 is 656635551.

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, 142545 + ... + 143631.

Almost surely, 2^155536656 is an apocalyptic number.

155536656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155536656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220176384).

155536656 is an abundant number, since it is smaller than the sum of its proper divisors (284816112).

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

155536656 is a wasteful number, since it uses less digits than its factorization.

155536656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380 (or 1374 counting only the distinct ones).

The product of its digits is 405000, while the sum is 42.

The square root of 155536656 is about 12471.4335984280. The cubic root of 155536656 is about 537.7877670182.

The spelling of 155536656 in words is "one hundred fifty-five million, five hundred thirty-six thousand, six hundred fifty-six".