266834874972 has 192 divisors, whose sum is σ = 719191388160. Its totient is φ = 76441190400.

The previous prime is 266834874931. The next prime is 266834874983. The reversal of 266834874972 is 279478438662.

It is a super-4 number, since 4×266834874972⁴ (a number of 47 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30875772 + ... + 30884412.

It is an arithmetic number, because the mean of its divisors is an integer number (3745788480).

Almost surely, 2^266834874972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266834874972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359595694080).

266834874972 is an abundant number, since it is smaller than the sum of its proper divisors (452356513188).

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

266834874972 is a wasteful number, since it uses less digits than its factorization.

266834874972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8972 (or 8970 counting only the distinct ones).

The product of its digits is 195084288, while the sum is 66.

The spelling of 266834874972 in words is "two hundred sixty-six billion, eight hundred thirty-four million, eight hundred seventy-four thousand, nine hundred seventy-two".