62128472821 has 2 divisors, whose sum is σ = 62128472822. Its totient is φ = 62128472820.

The previous prime is 62128472803. The next prime is 62128472863. The reversal of 62128472821 is 12827482126.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61745292196 + 383180625 = 248486^2 + 19575^2 .

It is a cyclic number.

It is not a de Polignac number, because 62128472821 - 2¹¹ = 62128470773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (62128472621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31064236410 + 31064236411.

It is an arithmetic number, because the mean of its divisors is an integer number (31064236411).

Almost surely, 2^62128472821 is an apocalyptic number.

It is an amenable number.

62128472821 is a deficient number, since it is larger than the sum of its proper divisors (1).

62128472821 is an equidigital number, since it uses as much as digits as its factorization.

62128472821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172032, while the sum is 43.

The spelling of 62128472821 in words is "sixty-two billion, one hundred twenty-eight million, four hundred seventy-two thousand, eight hundred twenty-one".