155116661050 has 48 divisors (see below), whose sum is σ = 315976963680. Its totient is φ = 56303087040.

The previous prime is 155116661033. The next prime is 155116661087. The reversal of 155116661050 is 50166611551.

It is a super-3 number, since 3×155116661050³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1984032 + ... + 2060731.

It is an arithmetic number, because the mean of its divisors is an integer number (6582853410).

Almost surely, 2^155116661050 is an apocalyptic number.

155116661050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155116661050 is an abundant number, since it is smaller than the sum of its proper divisors (160860302630).

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

155116661050 is a wasteful number, since it uses less digits than its factorization.

155116661050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4044847 (or 4044842 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 155116661050 in words is "one hundred fifty-five billion, one hundred sixteen million, six hundred sixty-one thousand, fifty".