155036642542250 has 32 divisors (see below), whose sum is σ = 331689822676992. Its totient is φ = 53155420299600.

The previous prime is 155036642542181. The next prime is 155036642542267. The reversal of 155036642542250 is 52245246630551.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (50).

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, 44296181834 + ... + 44296185333.

It is an arithmetic number, because the mean of its divisors is an integer number (10365306958656).

Almost surely, 2^{155036642542250} is an apocalyptic number.

155036642542250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155036642542250 is an abundant number, since it is smaller than the sum of its proper divisors (176653180134742).

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

155036642542250 is an equidigital number, since it uses as much as digits as its factorization.

155036642542250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88592367191 (or 88592367181 counting only the distinct ones).

The product of its (nonzero) digits is 8640000, while the sum is 50.

The spelling of 155036642542250 in words is "one hundred fifty-five trillion, thirty-six billion, six hundred forty-two million, five hundred forty-two thousand, two hundred fifty".