126591993632289 has 32 divisors (see below), whose sum is σ = 177777127019520. Its totient is φ = 79969501478592.

The previous prime is 126591993632287. The next prime is 126591993632311. The reversal of 126591993632289 is 982236399195621.

It is not a de Polignac number, because 126591993632289 - 2¹ = 126591993632287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126591993632289.

It is not an unprimeable number, because it can be changed into a prime (126591993632287) 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, 578917227 + ... + 579135855.

It is an arithmetic number, because the mean of its divisors is an integer number (5555535219360).

Almost surely, 2^{126591993632289} is an apocalyptic number.

It is an amenable number.

126591993632289 is a deficient number, since it is larger than the sum of its proper divisors (51185133387231).

126591993632289 is a wasteful number, since it uses less digits than its factorization.

126591993632289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297189.

The product of its digits is 680244480, while the sum is 75.

The spelling of 126591993632289 in words is "one hundred twenty-six trillion, five hundred ninety-one billion, nine hundred ninety-three million, six hundred thirty-two thousand, two hundred eighty-nine".