47437463839421 has 2 divisors, whose sum is σ = 47437463839422. Its totient is φ = 47437463839420.

The previous prime is 47437463839387. The next prime is 47437463839523. The reversal of 47437463839421 is 12493836473474.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47430961836196 + 6502003225 = 6887014^2 + 80635^2 .

It is a cyclic number.

It is not a de Polignac number, because 47437463839421 - 2⁶ = 47437463839357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47437463839121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23718731919710 + 23718731919711.

It is an arithmetic number, because the mean of its divisors is an integer number (23718731919711).

Almost surely, 2^{47437463839421} is an apocalyptic number.

It is an amenable number.

47437463839421 is a deficient number, since it is larger than the sum of its proper divisors (1).

47437463839421 is an equidigital number, since it uses as much as digits as its factorization.

47437463839421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 292626432, while the sum is 65.

The spelling of 47437463839421 in words is "forty-seven trillion, four hundred thirty-seven billion, four hundred sixty-three million, eight hundred thirty-nine thousand, four hundred twenty-one".