266965600990 has 32 divisors (see below), whose sum is σ = 535377060864. Its totient is φ = 95012900640.

The previous prime is 266965600939. The next prime is 266965600997. The reversal of 266965600990 is 99006569662.

It is a super-2 number, since 2×266965600990² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266965600997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25813554 + ... + 25823893.

It is an arithmetic number, because the mean of its divisors is an integer number (16730533152).

Almost surely, 2^266965600990 is an apocalyptic number.

266965600990 is an abundant number, since it is smaller than the sum of its proper divisors (268411459874).

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

266965600990 is a wasteful number, since it uses less digits than its factorization.

266965600990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51637512.

The product of its (nonzero) digits is 9447840, while the sum is 58.

The spelling of 266965600990 in words is "two hundred sixty-six billion, nine hundred sixty-five million, six hundred thousand, nine hundred ninety".