266675642457984 has 512 divisors, whose sum is σ = 821557416960000. Its totient is φ = 85053731954688.

The previous prime is 266675642457979. The next prime is 266675642457989. The reversal of 266675642457984 is 489754246576662.

It is an interprime number because it is at equal distance from previous prime (266675642457979) and next prime (266675642457989).

It is a super-2 number, since 2×266675642457984² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266675642457989) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7759625569 + ... + 7759659935.

It is an arithmetic number, because the mean of its divisors is an integer number (1604604330000).

Almost surely, 2^{266675642457984} is an apocalyptic number.

266675642457984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266675642457984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (410778708480000).

266675642457984 is an abundant number, since it is smaller than the sum of its proper divisors (554881774502016).

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

266675642457984 is a wasteful number, since it uses less digits than its factorization.

266675642457984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35115 (or 35097 counting only the distinct ones).

The product of its digits is 29262643200, while the sum is 81.

The spelling of 266675642457984 in words is "two hundred sixty-six trillion, six hundred seventy-five billion, six hundred forty-two million, four hundred fifty-seven thousand, nine hundred eighty-four".