47727770437 has 2 divisors, whose sum is σ = 47727770438. Its totient is φ = 47727770436.

The previous prime is 47727770393. The next prime is 47727770471. The reversal of 47727770437 is 73407772774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24026860036 + 23700910401 = 155006^2 + 153951^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47727770437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47727780437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23863885218 + 23863885219.

It is an arithmetic number, because the mean of its divisors is an integer number (23863885219).

Almost surely, 2^47727770437 is an apocalyptic number.

It is an amenable number.

47727770437 is a deficient number, since it is larger than the sum of its proper divisors (1).

47727770437 is an equidigital number, since it uses as much as digits as its factorization.

47727770437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11294304, while the sum is 55.

The spelling of 47727770437 in words is "forty-seven billion, seven hundred twenty-seven million, seven hundred seventy thousand, four hundred thirty-seven".