266961196151200 has 144 divisors (see below), whose sum is σ = 699774526188864. Its totient is φ = 99087502438400.

The previous prime is 266961196151197. The next prime is 266961196151227. The reversal of 266961196151200 is 2151691169662.

It is a super-2 number, since 2×266961196151200² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 137270314 + ... + 139201513.

It is an arithmetic number, because the mean of its divisors is an integer number (4859545320756).

Almost surely, 2^{266961196151200} is an apocalyptic number.

266961196151200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266961196151200 is an abundant number, since it is smaller than the sum of its proper divisors (432813330037664).

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

266961196151200 is a wasteful number, since it uses less digits than its factorization.

266961196151200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276471935 (or 276471922 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 55.

The spelling of 266961196151200 in words is "two hundred sixty-six trillion, nine hundred sixty-one billion, one hundred ninety-six million, one hundred fifty-one thousand, two hundred".