128277870482642 has 16 divisors (see below), whose sum is σ = 197107742189952. Its totient is φ = 62578564404720.

The previous prime is 128277870482581. The next prime is 128277870482653. The reversal of 128277870482642 is 246284078772821.

It is a super-2 number, since 2×128277870482642² (a number of 29 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, 818584193 + ... + 818740884.

It is an arithmetic number, because the mean of its divisors is an integer number (12319233886872).

Almost surely, 2^{128277870482642} is an apocalyptic number.

128277870482642 is a deficient number, since it is larger than the sum of its proper divisors (68829871707310).

128277870482642 is a wasteful number, since it uses less digits than its factorization.

128277870482642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1637326033.

The product of its (nonzero) digits is 269746176, while the sum is 68.

The spelling of 128277870482642 in words is "one hundred twenty-eight trillion, two hundred seventy-seven billion, eight hundred seventy million, four hundred eighty-two thousand, six hundred forty-two".