128164971952 has 20 divisors (see below), whose sum is σ = 248429240136. Its totient is φ = 64054200320.

The previous prime is 128164971947. The next prime is 128164971967. The reversal of 128164971952 is 259179461821.

It is a junction number, because it is equal to n+sod(n) for n = 128164971893 and 128164971902.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1730449 + ... + 1802992.

Almost surely, 2^128164971952 is an apocalyptic number.

It is an amenable number.

128164971952 is a deficient number, since it is larger than the sum of its proper divisors (120264268184).

128164971952 is a wasteful number, since it uses less digits than its factorization.

128164971952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3535716 (or 3535710 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 55.

The spelling of 128164971952 in words is "one hundred twenty-eight billion, one hundred sixty-four million, nine hundred seventy-one thousand, nine hundred fifty-two".