266503074474 has 192 divisors, whose sum is σ = 674750248704. Its totient is φ = 68332336128.

The previous prime is 266503074443. The next prime is 266503074499. The reversal of 266503074474 is 474470305662.

266503074474 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 279645982 + ... + 279646934.

It is an arithmetic number, because the mean of its divisors is an integer number (3514324212).

Almost surely, 2^266503074474 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266503074474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337375124352).

266503074474 is an abundant number, since it is smaller than the sum of its proper divisors (408247174230).

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

266503074474 is a wasteful number, since it uses less digits than its factorization.

266503074474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341 (or 1298 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 48.

The spelling of 266503074474 in words is "two hundred sixty-six billion, five hundred three million, seventy-four thousand, four hundred seventy-four".