266057490641 has 16 divisors (see below), whose sum is σ = 281472459840. Its totient is φ = 251117106240.

The previous prime is 266057490553. The next prime is 266057490661. The reversal of 266057490641 is 146094750662.

It is not a de Polignac number, because 266057490641 - 2¹⁸ = 266057228497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 266057490641.

It is not an unprimeable number, because it can be changed into a prime (266057490661) 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, 268106 + ... + 777171.

It is an arithmetic number, because the mean of its divisors is an integer number (17592028740).

Almost surely, 2^266057490641 is an apocalyptic number.

It is an amenable number.

266057490641 is a deficient number, since it is larger than the sum of its proper divisors (15414969199).

266057490641 is a wasteful number, since it uses less digits than its factorization.

266057490641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045504.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 266057490641 in words is "two hundred sixty-six billion, fifty-seven million, four hundred ninety thousand, six hundred forty-one".