243156623020 has 12 divisors (see below), whose sum is σ = 510628908384. Its totient is φ = 97262649200.

The previous prime is 243156622993. The next prime is 243156623029. The reversal of 243156623020 is 20326651342.

It is not an unprimeable number, because it can be changed into a prime (243156623029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6078915556 + ... + 6078915595.

It is an arithmetic number, because the mean of its divisors is an integer number (42552409032).

Almost surely, 2^243156623020 is an apocalyptic number.

243156623020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243156623020 is an abundant number, since it is smaller than the sum of its proper divisors (267472285364).

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

243156623020 is a wasteful number, since it uses less digits than its factorization.

243156623020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12157831160 (or 12157831158 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

The spelling of 243156623020 in words is "two hundred forty-three billion, one hundred fifty-six million, six hundred twenty-three thousand, twenty".