153878421220 has 96 divisors (see below), whose sum is σ = 340808767488. Its totient is φ = 58246121472.

The previous prime is 153878421181. The next prime is 153878421223. The reversal of 153878421220 is 22124878351.

It is not an unprimeable number, because it can be changed into a prime (153878421223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31549422 + ... + 31554298.

It is an arithmetic number, because the mean of its divisors is an integer number (3550091328).

Almost surely, 2^153878421220 is an apocalyptic number.

153878421220 is a gapful number since it is divisible by the number (10) 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 153878421220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170404383744).

153878421220 is an abundant number, since it is smaller than the sum of its proper divisors (186930346268).

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

153878421220 is a wasteful number, since it uses less digits than its factorization.

153878421220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5629 (or 5627 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 153878421220 in words is "one hundred fifty-three billion, eight hundred seventy-eight million, four hundred twenty-one thousand, two hundred twenty".