12577826021 has 8 divisors (see below), whose sum is σ = 12612233088. Its totient is φ = 12543444000.

The previous prime is 12577825999. The next prime is 12577826047. The reversal of 12577826021 is 12062877521.

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 12577826021 - 2⁶ = 12577825957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12577826021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12577826071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1431281 + ... + 1440041.

It is an arithmetic number, because the mean of its divisors is an integer number (1576529136).

Almost surely, 2^12577826021 is an apocalyptic number.

It is an amenable number.

12577826021 is a deficient number, since it is larger than the sum of its proper divisors (34407067).

12577826021 is an equidigital number, since it uses as much as digits as its factorization.

12577826021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12523.

The product of its (nonzero) digits is 94080, while the sum is 41.

The spelling of 12577826021 in words is "twelve billion, five hundred seventy-seven million, eight hundred twenty-six thousand, twenty-one".