155100243450 has 48 divisors (see below), whose sum is σ = 385082585280. Its totient is φ = 41313400320.

The previous prime is 155100243449. The next prime is 155100243451. The reversal of 155100243450 is 54342001551.

It is an interprime number because it is at equal distance from previous prime (155100243449) and next prime (155100243451).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (155100243451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 449815 + ... + 715914.

It is an arithmetic number, because the mean of its divisors is an integer number (8022553860).

Almost surely, 2^155100243450 is an apocalyptic number.

155100243450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155100243450 is an abundant number, since it is smaller than the sum of its proper divisors (229982341830).

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

155100243450 is a wasteful number, since it uses less digits than its factorization.

155100243450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166631 (or 1166626 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 155100243450 in words is "one hundred fifty-five billion, one hundred million, two hundred forty-three thousand, four hundred fifty".