128625300735447 has 32 divisors (see below), whose sum is σ = 172777135104000. Its totient is φ = 85114050370272.

The previous prime is 128625300735443. The next prime is 128625300735493. The reversal of 128625300735447 is 744537003526821.

It is not a de Polignac number, because 128625300735447 - 2² = 128625300735443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128625300735443) 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, 727516704 + ... + 727693482.

It is an arithmetic number, because the mean of its divisors is an integer number (5399285472000).

Almost surely, 2^{128625300735447} is an apocalyptic number.

128625300735447 is a deficient number, since it is larger than the sum of its proper divisors (44151834368553).

128625300735447 is a wasteful number, since it uses less digits than its factorization.

128625300735447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179907.

The product of its (nonzero) digits is 33868800, while the sum is 57.

The spelling of 128625300735447 in words is "one hundred twenty-eight trillion, six hundred twenty-five billion, three hundred million, seven hundred thirty-five thousand, four hundred forty-seven".