128025476420 has 24 divisors (see below), whose sum is σ = 269586086784. Its totient is φ = 51070650336.

The previous prime is 128025476393. The next prime is 128025476459. The reversal of 128025476420 is 24674520821.

It is a happy number.

It is a super-2 number, since 2×128025476420² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8713742 + ... + 8728421.

It is an arithmetic number, because the mean of its divisors is an integer number (11232753616).

Almost surely, 2^128025476420 is an apocalyptic number.

128025476420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128025476420 is an abundant number, since it is smaller than the sum of its proper divisors (141560610364).

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

128025476420 is a wasteful number, since it uses less digits than its factorization.

128025476420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17442539 (or 17442537 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 41.

The spelling of 128025476420 in words is "one hundred twenty-eight billion, twenty-five million, four hundred seventy-six thousand, four hundred twenty".