266804705577461 has 4 divisors (see below), whose sum is σ = 282499100023212. Its totient is φ = 251110311131712.

The previous prime is 266804705577457. The next prime is 266804705577467. The reversal of 266804705577461 is 164775507408662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 247294684067236 + 19510021510225 = 15725606^2 + 4417015^2 .

It is a cyclic number.

It is not a de Polignac number, because 266804705577461 - 2² = 266804705577457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 266804705577391 and 266804705577400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266804705577467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7847197222850 + ... + 7847197222883.

It is an arithmetic number, because the mean of its divisors is an integer number (70624775005803).

Almost surely, 2^{266804705577461} is an apocalyptic number.

It is an amenable number.

266804705577461 is a deficient number, since it is larger than the sum of its proper divisors (15694394445751).

266804705577461 is a wasteful number, since it uses less digits than its factorization.

266804705577461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15694394445750.

The product of its (nonzero) digits is 474163200, while the sum is 68.

The spelling of 266804705577461 in words is "two hundred sixty-six trillion, eight hundred four billion, seven hundred five million, five hundred seventy-seven thousand, four hundred sixty-one".