155967642252 has 18 divisors (see below), whose sum is σ = 394251540228. Its totient is φ = 51989214072.

The previous prime is 155967642199. The next prime is 155967642283. The reversal of 155967642252 is 252246769551.

155967642252 is a `hidden beast` number, since 1 + 5 + 596 + 7 + 6 + 42 + 2 + 5 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2166217218 + ... + 2166217289.

It is an arithmetic number, because the mean of its divisors is an integer number (21902863346).

Almost surely, 2^155967642252 is an apocalyptic number.

155967642252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155967642252 is an abundant number, since it is smaller than the sum of its proper divisors (238283897976).

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

155967642252 is a wasteful number, since it uses less digits than its factorization.

155967642252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4332434517 (or 4332434512 counting only the distinct ones).

The product of its digits is 9072000, while the sum is 54.

The spelling of 155967642252 in words is "one hundred fifty-five billion, nine hundred sixty-seven million, six hundred forty-two thousand, two hundred fifty-two".