47872038691 has 2 divisors, whose sum is σ = 47872038692. Its totient is φ = 47872038690.

The previous prime is 47872038673. The next prime is 47872038713. The reversal of 47872038691 is 19683027874.

47872038691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47872038691 - 2³¹ = 45724555043 is a prime.

It is not a weakly prime, because it can be changed into another prime (47872038091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23936019345 + 23936019346.

It is an arithmetic number, because the mean of its divisors is an integer number (23936019346).

Almost surely, 2^47872038691 is an apocalyptic number.

47872038691 is a deficient number, since it is larger than the sum of its proper divisors (1).

47872038691 is an equidigital number, since it uses as much as digits as its factorization.

47872038691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 47872038691 in words is "forty-seven billion, eight hundred seventy-two million, thirty-eight thousand, six hundred ninety-one".