128615506361 has 8 divisors (see below), whose sum is σ = 130277808000. Its totient is φ = 126958031200.

The previous prime is 128615506339. The next prime is 128615506373. The reversal of 128615506361 is 163605516821.

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

It is a cyclic number.

It is not a de Polignac number, because 128615506361 - 2⁶ = 128615506297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (128615506301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1152965 + ... + 1259586.

It is an arithmetic number, because the mean of its divisors is an integer number (16284726000).

Almost surely, 2^128615506361 is an apocalyptic number.

It is an amenable number.

128615506361 is a deficient number, since it is larger than the sum of its proper divisors (1662301639).

128615506361 is an equidigital number, since it uses as much as digits as its factorization.

128615506361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2413239.

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 128615506361 in words is "one hundred twenty-eight billion, six hundred fifteen million, five hundred six thousand, three hundred sixty-one".