128636964351 has 40 divisors (see below), whose sum is σ = 219770247840. Its totient is φ = 73454211072.

The previous prime is 128636964349. The next prime is 128636964359. The reversal of 128636964351 is 153469636821.

128636964351 is a `hidden beast` number, since 1 + 286 + 3 + 6 + 9 + 6 + 4 + 351 = 666.

It is not a de Polignac number, because 128636964351 - 2¹ = 128636964349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128636964359) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 718395 + ... + 879411.

It is an arithmetic number, because the mean of its divisors is an integer number (5494256196).

Almost surely, 2^128636964351 is an apocalyptic number.

128636964351 is a deficient number, since it is larger than the sum of its proper divisors (91133283489).

128636964351 is a wasteful number, since it uses less digits than its factorization.

128636964351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162445 (or 162436 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The spelling of 128636964351 in words is "one hundred twenty-eight billion, six hundred thirty-six million, nine hundred sixty-four thousand, three hundred fifty-one".