128277387250475 has 48 divisors (see below), whose sum is σ = 164892062080800. Its totient is φ = 98917873689600.

The previous prime is 128277387250457. The next prime is 128277387250513. The reversal of 128277387250475 is 574052783772821.

It is not a de Polignac number, because 128277387250475 - 2¹⁴ = 128277387234091 is a prime.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 43540676 + ... + 46393374.

It is an arithmetic number, because the mean of its divisors is an integer number (3435251293350).

Almost surely, 2^{128277387250475} is an apocalyptic number.

128277387250475 is a deficient number, since it is larger than the sum of its proper divisors (36614674830325).

128277387250475 is a wasteful number, since it uses less digits than its factorization.

128277387250475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2853200 (or 2853195 counting only the distinct ones).

The product of its (nonzero) digits is 368793600, while the sum is 68.

The spelling of 128277387250475 in words is "one hundred twenty-eight trillion, two hundred seventy-seven billion, three hundred eighty-seven million, two hundred fifty thousand, four hundred seventy-five".