128875153640 has 32 divisors (see below), whose sum is σ = 291001039560. Its totient is φ = 51366604800.

The previous prime is 128875153621. The next prime is 128875153643. The reversal of 128875153640 is 46351578821.

It can be written as a sum of positive squares in 4 ways, for example, as 128016546436 + 858607204 = 357794^2 + 29302^2 .

It is not an unprimeable number, because it can be changed into a prime (128875153643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5721641 + ... + 5744120.

Almost surely, 2^128875153640 is an apocalyptic number.

128875153640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128875153640 is an abundant number, since it is smaller than the sum of its proper divisors (162125885920).

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

128875153640 is a wasteful number, since it uses less digits than its factorization.

128875153640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11466053 (or 11466049 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 50.

The spelling of 128875153640 in words is "one hundred twenty-eight billion, eight hundred seventy-five million, one hundred fifty-three thousand, six hundred forty".