266626121272 has 16 divisors (see below), whose sum is σ = 571341688560. Its totient is φ = 114268337664.

The previous prime is 266626121243. The next prime is 266626121299. The reversal of 266626121272 is 272121626662.

It is a congruent 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, 2380590313 + ... + 2380590424.

It is an arithmetic number, because the mean of its divisors is an integer number (35708855535).

Almost surely, 2^266626121272 is an apocalyptic number.

It is an amenable number.

266626121272 is an abundant number, since it is smaller than the sum of its proper divisors (304715567288).

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

266626121272 is a wasteful number, since it uses less digits than its factorization.

266626121272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4761180750 (or 4761180746 counting only the distinct ones).

The product of its digits is 290304, while the sum is 43.

The spelling of 266626121272 in words is "two hundred sixty-six billion, six hundred twenty-six million, one hundred twenty-one thousand, two hundred seventy-two".