128740458651 has 24 divisors (see below), whose sum is σ = 206120346624. Its totient is φ = 71192877840.

The previous prime is 128740458641. The next prime is 128740458739. The reversal of 128740458651 is 156854047821.

It is a happy number.

It is not a de Polignac number, because 128740458651 - 2¹⁹ = 128739934363 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128740458594 and 128740458603.

It is not an unprimeable number, because it can be changed into a prime (128740458641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14121015 + ... + 14130128.

It is an arithmetic number, because the mean of its divisors is an integer number (8588347776).

Almost surely, 2^128740458651 is an apocalyptic number.

128740458651 is a deficient number, since it is larger than the sum of its proper divisors (77379887973).

128740458651 is a wasteful number, since it uses less digits than its factorization.

128740458651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28251191 (or 28251184 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 51.

The spelling of 128740458651 in words is "one hundred twenty-eight billion, seven hundred forty million, four hundred fifty-eight thousand, six hundred fifty-one".