266620246644 has 36 divisors (see below), whose sum is σ = 639382267104. Its totient is φ = 86471426016.

The previous prime is 266620246643. The next prime is 266620246687. The reversal of 266620246644 is 446642026662.

It is a junction number, because it is equal to n+sod(n) for n = 266620246593 and 266620246602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266620246643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8098384 + ... + 8131239.

Almost surely, 2^266620246644 is an apocalyptic number.

It is an amenable number.

266620246644 is an abundant number, since it is smaller than the sum of its proper divisors (372762020460).

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

266620246644 is a wasteful number, since it uses less digits than its factorization.

266620246644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16229704 (or 16229665 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 48.

The spelling of 266620246644 in words is "two hundred sixty-six billion, six hundred twenty million, two hundred forty-six thousand, six hundred forty-four".