242555551500 has 192 divisors, whose sum is σ = 710941795200. Its totient is φ = 64259968000.

The previous prime is 242555551481. The next prime is 242555551519. The reversal of 242555551500 is 5155555242.

It is an interprime number because it is at equal distance from previous prime (242555551481) and next prime (242555551519).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 205380910 + ... + 205382090.

It is an arithmetic number, because the mean of its divisors is an integer number (3702821850).

Almost surely, 2^242555551500 is an apocalyptic number.

242555551500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242555551500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355470897600).

242555551500 is an abundant number, since it is smaller than the sum of its proper divisors (468386243700).

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

242555551500 is a wasteful number, since it uses less digits than its factorization.

242555551500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981 (or 1969 counting only the distinct ones).

The product of its (nonzero) digits is 250000, while the sum is 39.

It can be divided in two parts, 24255 and 5551500, that added together give a palindrome (5575755).

The spelling of 242555551500 in words is "two hundred forty-two billion, five hundred fifty-five million, five hundred fifty-one thousand, five hundred".