47666402865 has 12 divisors (see below), whose sum is σ = 82621765044. Its totient is φ = 25422081504.

The previous prime is 47666402837. The next prime is 47666402891. The reversal of 47666402865 is 56820466674.

It can be written as a sum of positive squares in 2 ways, for example, as 27686297664 + 19980105201 = 166392^2 + 141351^2 .

It is not a de Polignac number, because 47666402865 - 2¹⁸ = 47666140721 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 529626654 + ... + 529626743.

It is an arithmetic number, because the mean of its divisors is an integer number (6885147087).

Almost surely, 2^47666402865 is an apocalyptic number.

47666402865 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47666402865 is a deficient number, since it is larger than the sum of its proper divisors (34955362179).

47666402865 is a wasteful number, since it uses less digits than its factorization.

47666402865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059253408 (or 1059253405 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 54.

The spelling of 47666402865 in words is "forty-seven billion, six hundred sixty-six million, four hundred two thousand, eight hundred sixty-five".