128572701941 has 4 divisors (see below), whose sum is σ = 131308291392. Its totient is φ = 125837112492.

The previous prime is 128572701937. The next prime is 128572701953. The reversal of 128572701941 is 149107275821.

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.

It is a cyclic number.

It is not a de Polignac number, because 128572701941 - 2² = 128572701937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 2735589403 = 128572701941 / (1 + 2 + 8 + 5 + 7 + 2 + 7 + 0 + 1 + 9 + 4 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128572701911) 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, 1367794655 + ... + 1367794748.

It is an arithmetic number, because the mean of its divisors is an integer number (32827072848).

Almost surely, 2^128572701941 is an apocalyptic number.

It is an amenable number.

128572701941 is a deficient number, since it is larger than the sum of its proper divisors (2735589451).

128572701941 is an equidigital number, since it uses as much as digits as its factorization.

128572701941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2735589450.

The product of its (nonzero) digits is 282240, while the sum is 47.

The spelling of 128572701941 in words is "one hundred twenty-eight billion, five hundred seventy-two million, seven hundred one thousand, nine hundred forty-one".