128120353175952 has 40 divisors (see below), whose sum is σ = 367752865598880. Its totient is φ = 42706784391840.

The previous prime is 128120353175933. The next prime is 128120353175987. The reversal of 128120353175952 is 259571353021821.

It is a happy number.

128120353175952 is a `hidden beast` number, since 1 + 2 + 8 + 1 + 2 + 0 + 3 + 531 + 7 + 59 + 52 = 666.

It is a super-2 number, since 2×128120353175952² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 148287445374 + ... + 148287446237.

It is an arithmetic number, because the mean of its divisors is an integer number (9193821639972).

Almost surely, 2^{128120353175952} is an apocalyptic number.

128120353175952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128120353175952 is an abundant number, since it is smaller than the sum of its proper divisors (239632512422928).

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

128120353175952 is a wasteful number, since it uses less digits than its factorization.

128120353175952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296574891628 (or 296574891616 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 54.

The spelling of 128120353175952 in words is "one hundred twenty-eight trillion, one hundred twenty billion, three hundred fifty-three million, one hundred seventy-five thousand, nine hundred fifty-two".