266722962672 has 20 divisors (see below), whose sum is σ = 689034320360. Its totient is φ = 88907654208.

The previous prime is 266722962641. The next prime is 266722962703. The reversal of 266722962672 is 276269227662.

It is an interprime number because it is at equal distance from previous prime (266722962641) and next prime (266722962703).

It is a super-2 number, since 2×266722962672² (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 3 ways as a sum of consecutive naturals, for example, 2778364147 + ... + 2778364242.

It is an arithmetic number, because the mean of its divisors is an integer number (34451716018).

Almost surely, 2^266722962672 is an apocalyptic number.

It is an amenable number.

266722962672 is an abundant number, since it is smaller than the sum of its proper divisors (422311357688).

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

266722962672 is a wasteful number, since it uses less digits than its factorization.

266722962672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5556728400 (or 5556728394 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 57.

The spelling of 266722962672 in words is "two hundred sixty-six billion, seven hundred twenty-two million, nine hundred sixty-two thousand, six hundred seventy-two".