47645764786 has 4 divisors (see below), whose sum is σ = 71468647182. Its totient is φ = 23822882392.

The previous prime is 47645764781. The next prime is 47645764937. The reversal of 47645764786 is 68746754674.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 34440307561 + 13205457225 = 185581^2 + 114915^2 .

It is not an unprimeable number, because it can be changed into a prime (47645764781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11911441195 + ... + 11911441198.

Almost surely, 2^47645764786 is an apocalyptic number.

47645764786 is a deficient number, since it is larger than the sum of its proper divisors (23822882396).

47645764786 is a wasteful number, since it uses less digits than its factorization.

47645764786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23822882395.

The product of its digits is 189665280, while the sum is 64.

The spelling of 47645764786 in words is "forty-seven billion, six hundred forty-five million, seven hundred sixty-four thousand, seven hundred eighty-six".