2616412921 has 2 divisors, whose sum is σ = 2616412922. Its totient is φ = 2616412920.

The previous prime is 2616412907. The next prime is 2616412933. The reversal of 2616412921 is 1292146162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2037529321 + 578883600 = 45139^2 + 24060^2 .

It is a cyclic number.

It is not a de Polignac number, because 2616412921 - 2⁵ = 2616412889 is a prime.

It is not a weakly prime, because it can be changed into another prime (2616412951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1308206460 + 1308206461.

It is an arithmetic number, because the mean of its divisors is an integer number (1308206461).

Almost surely, 2^2616412921 is an apocalyptic number.

It is an amenable number.

2616412921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2616412921 is an equidigital number, since it uses as much as digits as its factorization.

2616412921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 34.

The square root of 2616412921 is about 51150.8838731062. The cubic root of 2616412921 is about 1377.9562481764.

The spelling of 2616412921 in words is "two billion, six hundred sixteen million, four hundred twelve thousand, nine hundred twenty-one".