266454502242240 has 224 divisors, whose sum is σ = 913695007841280. Its totient is φ = 65399782772736.

The previous prime is 266454502242209. The next prime is 266454502242283. The reversal of 266454502242240 is 42242205454662.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 266454502242240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26433880 + ... + 35094999.

It is an arithmetic number, because the mean of its divisors is an integer number (4078995570720).

Almost surely, 2^{266454502242240} is an apocalyptic number.

266454502242240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266454502242240 is an abundant number, since it is smaller than the sum of its proper divisors (647240505599040).

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

266454502242240 is a wasteful number, since it uses less digits than its factorization.

266454502242240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61529259 (or 61529249 counting only the distinct ones).

The product of its (nonzero) digits is 7372800, while the sum is 48.

The spelling of 266454502242240 in words is "two hundred sixty-six trillion, four hundred fifty-four billion, five hundred two million, two hundred forty-two thousand, two hundred forty".