2671428821 has 2 divisors, whose sum is σ = 2671428822. Its totient is φ = 2671428820.

The previous prime is 2671428769. The next prime is 2671428839. The reversal of 2671428821 is 1288241762.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2668239025 + 3189796 = 51655^2 + 1786^2 .

It is a cyclic number.

It is not a de Polignac number, because 2671428821 - 2²² = 2667234517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2671428421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1335714410 + 1335714411.

It is an arithmetic number, because the mean of its divisors is an integer number (1335714411).

Almost surely, 2^2671428821 is an apocalyptic number.

It is an amenable number.

2671428821 is a deficient number, since it is larger than the sum of its proper divisors (1).

2671428821 is an equidigital number, since it uses as much as digits as its factorization.

2671428821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86016, while the sum is 41.

The square root of 2671428821 is about 51685.8667432404. The cubic root of 2671428821 is about 1387.5475311586.

The spelling of 2671428821 in words is "two billion, six hundred seventy-one million, four hundred twenty-eight thousand, eight hundred twenty-one".