128748681061 has 32 divisors (see below), whose sum is σ = 173364000768. Its totient is φ = 92339317440.

The previous prime is 128748681023. The next prime is 128748681079. The reversal of 128748681061 is 160186847821.

It is a cyclic number.

It is not a de Polignac number, because 128748681061 - 2¹¹ = 128748679013 is a prime.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128748681361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162016 + ... + 532678.

It is an arithmetic number, because the mean of its divisors is an integer number (5417625024).

Almost surely, 2^128748681061 is an apocalyptic number.

128748681061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

128748681061 is a deficient number, since it is larger than the sum of its proper divisors (44615319707).

128748681061 is a wasteful number, since it uses less digits than its factorization.

128748681061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371041.

The product of its (nonzero) digits is 1032192, while the sum is 52.

The spelling of 128748681061 in words is "one hundred twenty-eight billion, seven hundred forty-eight million, six hundred eighty-one thousand, sixty-one".