155666116 has 12 divisors (see below), whose sum is σ = 284260032. Its totient is φ = 74448968.

The previous prime is 155666101. The next prime is 155666123. The reversal of 155666116 is 611666551.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 845920 + ... + 846103.

It is an arithmetic number, because the mean of its divisors is an integer number (23688336).

Almost surely, 2^155666116 is an apocalyptic number.

It is an amenable number.

155666116 is a deficient number, since it is larger than the sum of its proper divisors (128593916).

155666116 is a wasteful number, since it uses less digits than its factorization.

155666116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692050 (or 1692048 counting only the distinct ones).

The product of its digits is 32400, while the sum is 37.

The square root of 155666116 is about 12476.6227802238. The cubic root of 155666116 is about 537.9369337774.

The spelling of 155666116 in words is "one hundred fifty-five million, six hundred sixty-six thousand, one hundred sixteen".