26266545531630 has 256 divisors, whose sum is σ = 73370976456960. Its totient is φ = 6679541366784.

The previous prime is 26266545531607. The next prime is 26266545531673. The reversal of 26266545531630 is 3613554566262.

It is a happy number.

26266545531630 is a `hidden beast` number, since 2 + 6 + 2 + 6 + 6 + 5 + 45 + 531 + 63 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 517266802 + ... + 517317578.

It is an arithmetic number, because the mean of its divisors is an integer number (286605376785).

Almost surely, 2^{26266545531630} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26266545531630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36685488228480).

26266545531630 is an abundant number, since it is smaller than the sum of its proper divisors (47104430925330).

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

26266545531630 is a wasteful number, since it uses less digits than its factorization.

26266545531630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51860 (or 51854 counting only the distinct ones).

The product of its (nonzero) digits is 23328000, while the sum is 54.

The spelling of 26266545531630 in words is "twenty-six trillion, two hundred sixty-six billion, five hundred forty-five million, five hundred thirty-one thousand, six hundred thirty".