128277476830287 has 16 divisors (see below), whose sum is σ = 195176941725280. Its totient is φ = 83207011997376.

The previous prime is 128277476830249. The next prime is 128277476830289. The reversal of 128277476830287 is 782038674772821.

128277476830287 is a `hidden beast` number, since 1 + 2 + 8 + 2 + 77 + 476 + 8 + 3 + 0 + 2 + 87 = 666.

It is not a de Polignac number, because 128277476830287 - 2¹¹ = 128277476828239 is a prime.

It is a super-2 number, since 2×128277476830287² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128277476830289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64202940358 + ... + 64202942355.

It is an arithmetic number, because the mean of its divisors is an integer number (12198558857830).

Almost surely, 2^{128277476830287} is an apocalyptic number.

128277476830287 is a deficient number, since it is larger than the sum of its proper divisors (66899464894993).

128277476830287 is a wasteful number, since it uses less digits than its factorization.

128277476830287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128405882759 (or 128405882753 counting only the distinct ones).

The product of its (nonzero) digits is 708083712, while the sum is 72.

The spelling of 128277476830287 in words is "one hundred twenty-eight trillion, two hundred seventy-seven billion, four hundred seventy-six million, eight hundred thirty thousand, two hundred eighty-seven".