266652256662 has 128 divisors (see below), whose sum is σ = 693292608000. Its totient is φ = 75106362240.

The previous prime is 266652256601. The next prime is 266652256667.

266652256662 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×266652256662² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 266652256599 and 266652256608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266652256667) 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, 375264 + ... + 821052.

It is an arithmetic number, because the mean of its divisors is an integer number (5416348500).

Almost surely, 2^266652256662 is an apocalyptic number.

266652256662 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 266652256662, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346646304000).

266652256662 is an abundant number, since it is smaller than the sum of its proper divisors (426640351338).

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

266652256662 is a wasteful number, since it uses less digits than its factorization.

266652256662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445883 (or 445877 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 54.

The spelling of 266652256662 in words is "two hundred sixty-six billion, six hundred fifty-two million, two hundred fifty-six thousand, six hundred sixty-two".