128769433185237 has 64 divisors (see below), whose sum is σ = 190007341332480. Its totient is φ = 77091889123584.

The previous prime is 128769433185227. The next prime is 128769433185299. The reversal of 128769433185237 is 732581334967821.

It is not a de Polignac number, because 128769433185237 - 2⁷ = 128769433185109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128769433185227) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 56728839 + ... + 58955067.

It is an arithmetic number, because the mean of its divisors is an integer number (2968864708320).

Almost surely, 2^{128769433185237} is an apocalyptic number.

It is an amenable number.

128769433185237 is a deficient number, since it is larger than the sum of its proper divisors (61237908147243).

128769433185237 is a wasteful number, since it uses less digits than its factorization.

128769433185237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2226602.

The product of its digits is 365783040, while the sum is 69.

The spelling of 128769433185237 in words is "one hundred twenty-eight trillion, seven hundred sixty-nine billion, four hundred thirty-three million, one hundred eighty-five thousand, two hundred thirty-seven".