47781582266669 has 4 divisors (see below), whose sum is σ = 48146327169600. Its totient is φ = 47416837363740.

The previous prime is 47781582266657. The next prime is 47781582266723. The reversal of 47781582266669 is 96666228518774.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47781582266669 - 2¹² = 47781582262573 is a prime.

It is a super-2 number, since 2×47781582266669² (a number of 28 digits) contains 22 as substring.

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 47781582266669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47781582266269) 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, 182372451269 + ... + 182372451530.

It is an arithmetic number, because the mean of its divisors is an integer number (12036581792400).

Almost surely, 2^{47781582266669} is an apocalyptic number.

It is an amenable number.

47781582266669 is a deficient number, since it is larger than the sum of its proper divisors (364744902931).

47781582266669 is a wasteful number, since it uses less digits than its factorization.

47781582266669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364744902930.

The product of its digits is 2926264320, while the sum is 77.

The spelling of 47781582266669 in words is "forty-seven trillion, seven hundred eighty-one billion, five hundred eighty-two million, two hundred sixty-six thousand, six hundred sixty-nine".