153153221220 has 72 divisors (see below), whose sum is σ = 475895642040. Its totient is φ = 39844738560.

The previous prime is 153153221209. The next prime is 153153221237. The reversal of 153153221220 is 22122351351.

153153221220 is a `hidden beast` number, since 1 + 5 + 3 + 1 + 532 + 2 + 122 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 17253347904 + 135899873316 = 131352^2 + 368646^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10368855 + ... + 10383614.

It is an arithmetic number, because the mean of its divisors is an integer number (6609661695).

Almost surely, 2^153153221220 is an apocalyptic number.

153153221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

153153221220 is an abundant number, since it is smaller than the sum of its proper divisors (322742420820).

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

153153221220 is a wasteful number, since it uses less digits than its factorization.

153153221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20752525 (or 20752520 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 153153221220 its reverse (22122351351), we get a palindrome (175275572571).

The spelling of 153153221220 in words is "one hundred fifty-three billion, one hundred fifty-three million, two hundred twenty-one thousand, two hundred twenty".