47686748731 has 2 divisors, whose sum is σ = 47686748732. Its totient is φ = 47686748730.

The previous prime is 47686748693. The next prime is 47686748827. The reversal of 47686748731 is 13784768674.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47686748731 - 2¹¹ = 47686746683 is a prime.

It is a super-2 number, since 2×47686748731² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 47686748731.

It is not a weakly prime, because it can be changed into another prime (47686548731) 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 as a sum of consecutive naturals, namely, 23843374365 + 23843374366.

It is an arithmetic number, because the mean of its divisors is an integer number (23843374366).

Almost surely, 2^47686748731 is an apocalyptic number.

47686748731 is a deficient number, since it is larger than the sum of its proper divisors (1).

47686748731 is an equidigital number, since it uses as much as digits as its factorization.

47686748731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37933056, while the sum is 61.

The spelling of 47686748731 in words is "forty-seven billion, six hundred eighty-six million, seven hundred forty-eight thousand, seven hundred thirty-one".