12890528558 has 4 divisors (see below), whose sum is σ = 19335792840. Its totient is φ = 6445264278.

The previous prime is 12890528557. The next prime is 12890528591. The reversal of 12890528558 is 85582509821.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×12890528558² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12890528551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3222632138 + ... + 3222632141.

It is an arithmetic number, because the mean of its divisors is an integer number (4833948210).

Almost surely, 2^12890528558 is an apocalyptic number.

12890528558 is a deficient number, since it is larger than the sum of its proper divisors (6445264282).

12890528558 is an equidigital number, since it uses as much as digits as its factorization.

12890528558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6445264281.

The product of its (nonzero) digits is 2304000, while the sum is 53.

The spelling of 12890528558 in words is "twelve billion, eight hundred ninety million, five hundred twenty-eight thousand, five hundred fifty-eight".