128481134701 has 4 divisors (see below), whose sum is σ = 128481990400. Its totient is φ = 128480279004.

The previous prime is 128481134699. The next prime is 128481134713. The reversal of 128481134701 is 107431184821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 128481134701 - 2¹ = 128481134699 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128481134731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136491 + ... + 524968.

It is an arithmetic number, because the mean of its divisors is an integer number (32120497600).

Almost surely, 2^128481134701 is an apocalyptic number.

It is an amenable number.

128481134701 is a deficient number, since it is larger than the sum of its proper divisors (855699).

128481134701 is an equidigital number, since it uses as much as digits as its factorization.

128481134701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855698.

The product of its (nonzero) digits is 43008, while the sum is 40.

The spelling of 128481134701 in words is "one hundred twenty-eight billion, four hundred eighty-one million, one hundred thirty-four thousand, seven hundred one".