26557043212 has 12 divisors (see below), whose sum is σ = 53114086480. Its totient is φ = 11381589936.

The previous prime is 26557043189. The next prime is 26557043257. The reversal of 26557043212 is 21234075562.

26557043212 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 474232887 + ... + 474232942.

Almost surely, 2^26557043212 is an apocalyptic number.

It is an amenable number.

26557043212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

26557043212 is a wasteful number, since it uses less digits than its factorization.

26557043212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948465840 (or 948465838 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 26557043212 in words is "twenty-six billion, five hundred fifty-seven million, forty-three thousand, two hundred twelve".