220155145249242 has 32 divisors (see below), whose sum is σ = 503911637913600. Its totient is φ = 62813985403248.

The previous prime is 220155145249157. The next prime is 220155145249253. The reversal of 220155145249242 is 242942541551022.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 220155145249191 and 220155145249200.

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, 3645163942 + ... + 3645224337.

It is an arithmetic number, because the mean of its divisors is an integer number (15747238684800).

Almost surely, 2^{220155145249242} is an apocalyptic number.

220155145249242 is an abundant number, since it is smaller than the sum of its proper divisors (283756492664358).

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

220155145249242 is a wasteful number, since it uses less digits than its factorization.

220155145249242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7290389010.

The product of its (nonzero) digits is 2304000, while the sum is 48.

The spelling of 220155145249242 in words is "two hundred twenty trillion, one hundred fifty-five billion, one hundred forty-five million, two hundred forty-nine thousand, two hundred forty-two".