128461653658 has 32 divisors (see below), whose sum is σ = 211709916432. Its totient is φ = 58094400000.

The previous prime is 128461653589. The next prime is 128461653659. The reversal of 128461653658 is 856356164821.

It can be written as a sum of positive squares in 8 ways, for example, as 56780694369 + 71680959289 = 238287^2 + 267733^2 .

It is a junction number, because it is equal to n+sod(n) for n = 128461653599 and 128461653608.

It is not an unprimeable number, because it can be changed into a prime (128461653659) 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, 987408 + ... + 1109908.

Almost surely, 2^128461653658 is an apocalyptic number.

128461653658 is a deficient number, since it is larger than the sum of its proper divisors (83248262774).

128461653658 is a wasteful number, since it uses less digits than its factorization.

128461653658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123330.

The product of its digits is 8294400, while the sum is 55.

The spelling of 128461653658 in words is "one hundred twenty-eight billion, four hundred sixty-one million, six hundred fifty-three thousand, six hundred fifty-eight".