47966945977 has 4 divisors (see below), whose sum is σ = 47968755840. Its totient is φ = 47965136116.

The previous prime is 47966945963. The next prime is 47966945981. The reversal of 47966945977 is 77954966974.

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 47966945977 - 2³¹ = 45819462329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47966945177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 864577 + ... + 918382.

It is an arithmetic number, because the mean of its divisors is an integer number (11992188960).

Almost surely, 2^47966945977 is an apocalyptic number.

It is an amenable number.

47966945977 is a deficient number, since it is larger than the sum of its proper divisors (1809863).

47966945977 is a wasteful number, since it uses less digits than its factorization.

47966945977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809862.

The product of its digits is 720135360, while the sum is 73.

The spelling of 47966945977 in words is "forty-seven billion, nine hundred sixty-six million, nine hundred forty-five thousand, nine hundred seventy-seven".