266672293872 has 40 divisors (see below), whose sum is σ = 725161503360. Its totient is φ = 84212303040.

The previous prime is 266672293813. The next prime is 266672293907. The reversal of 266672293872 is 278392276662.

It is a happy number.

It is a super-2 number, since 2×266672293872² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146201004 + ... + 146202827.

It is an arithmetic number, because the mean of its divisors is an integer number (18129037584).

Almost surely, 2^266672293872 is an apocalyptic number.

It is an amenable number.

266672293872 is an abundant number, since it is smaller than the sum of its proper divisors (458489209488).

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

266672293872 is a wasteful number, since it uses less digits than its factorization.

266672293872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292403861 (or 292403855 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 60.

The spelling of 266672293872 in words is "two hundred sixty-six billion, six hundred seventy-two million, two hundred ninety-three thousand, eight hundred seventy-two".