2611437421 has 2 divisors, whose sum is σ = 2611437422. Its totient is φ = 2611437420.

The previous prime is 2611437391. The next prime is 2611437487. The reversal of 2611437421 is 1247341162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2546312521 + 65124900 = 50461^2 + 8070^2 .

It is a cyclic number.

It is not a de Polignac number, because 2611437421 - 2⁷ = 2611437293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2611437821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1305718710 + 1305718711.

It is an arithmetic number, because the mean of its divisors is an integer number (1305718711).

Almost surely, 2^2611437421 is an apocalyptic number.

It is an amenable number.

2611437421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2611437421 is an equidigital number, since it uses as much as digits as its factorization.

2611437421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 31.

The square root of 2611437421 is about 51102.2252059536. The cubic root of 2611437421 is about 1377.0822307037.

Adding to 2611437421 its reverse (1247341162), we get a palindrome (3858778583).

The spelling of 2611437421 in words is "two billion, six hundred eleven million, four hundred thirty-seven thousand, four hundred twenty-one".