266820007436 has 12 divisors (see below), whose sum is σ = 477793967112. Its totient is φ = 130307445408.

The previous prime is 266820007381. The next prime is 266820007481. The reversal of 266820007436 is 634700028662.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 775639385 + ... + 775639728.

It is an arithmetic number, because the mean of its divisors is an integer number (39816163926).

Almost surely, 2^266820007436 is an apocalyptic number.

It is an amenable number.

266820007436 is a deficient number, since it is larger than the sum of its proper divisors (210973959676).

266820007436 is a wasteful number, since it uses less digits than its factorization.

266820007436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551279160 (or 1551279158 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 44.

The spelling of 266820007436 in words is "two hundred sixty-six billion, eight hundred twenty million, seven thousand, four hundred thirty-six".