47626855721 has 2 divisors, whose sum is σ = 47626855722. Its totient is φ = 47626855720.

The previous prime is 47626855709. The next prime is 47626855741. The reversal of 47626855721 is 12755862674.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35141251600 + 12485604121 = 187460^2 + 111739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47626855721 is a prime.

It is not a weakly prime, because it can be changed into another prime (47626855741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23813427860 + 23813427861.

It is an arithmetic number, because the mean of its divisors is an integer number (23813427861).

Almost surely, 2^47626855721 is an apocalyptic number.

It is an amenable number.

47626855721 is a deficient number, since it is larger than the sum of its proper divisors (1).

47626855721 is an equidigital number, since it uses as much as digits as its factorization.

47626855721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5644800, while the sum is 53.

The spelling of 47626855721 in words is "forty-seven billion, six hundred twenty-six million, eight hundred fifty-five thousand, seven hundred twenty-one".