128476384945 has 8 divisors (see below), whose sum is σ = 156699066600. Its totient is φ = 101096171520.

The previous prime is 128476384937. The next prime is 128476384957. The reversal of 128476384945 is 549483674821.

It can be written as a sum of positive squares in 4 ways, for example, as 14852784384 + 113623600561 = 121872^2 + 337081^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128476384945 - 2³ = 128476384937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210616720 + ... + 210617329.

It is an arithmetic number, because the mean of its divisors is an integer number (19587383325).

Almost surely, 2^128476384945 is an apocalyptic number.

It is an amenable number.

128476384945 is a deficient number, since it is larger than the sum of its proper divisors (28222681655).

128476384945 is an equidigital number, since it uses as much as digits as its factorization.

128476384945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421234115.

The product of its digits is 46448640, while the sum is 61.

The spelling of 128476384945 in words is "one hundred twenty-eight billion, four hundred seventy-six million, three hundred eighty-four thousand, nine hundred forty-five".