26628578452 has 24 divisors (see below), whose sum is σ = 53276207040. Its totient is φ = 11408165760.

The previous prime is 26628578411. The next prime is 26628578461. The reversal of 26628578452 is 25487582662.

It is a junction number, because it is equal to n+sod(n) for n = 26628578393 and 26628578402.

It is a congruent number.

It is an unprimeable number.

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, 89749 + ... + 247612.

It is an arithmetic number, because the mean of its divisors is an integer number (2219841960).

Almost surely, 2^26628578452 is an apocalyptic number.

It is an amenable number.

26628578452 is an abundant number, since it is smaller than the sum of its proper divisors (26647628588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26628578452 is a wasteful number, since it uses less digits than its factorization.

26628578452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340191 (or 340189 counting only the distinct ones).

The product of its digits is 12902400, while the sum is 55.

The spelling of 26628578452 in words is "twenty-six billion, six hundred twenty-eight million, five hundred seventy-eight thousand, four hundred fifty-two".