2562646081 has 2 divisors, whose sum is σ = 2562646082. Its totient is φ = 2562646080.

The previous prime is 2562646049. The next prime is 2562646091. The reversal of 2562646081 is 1806462652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2123366400 + 439279681 = 46080^2 + 20959^2 .

It is a cyclic number.

It is not a de Polignac number, because 2562646081 - 2⁵ = 2562646049 is a prime.

It is a super-2 number, since 2×2562646081² = 13134309872929317122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2562646091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1281323040 + 1281323041.

It is an arithmetic number, because the mean of its divisors is an integer number (1281323041).

Almost surely, 2^2562646081 is an apocalyptic number.

It is an amenable number.

2562646081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2562646081 is an equidigital number, since it uses as much as digits as its factorization.

2562646081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 2562646081 is about 50622.5846930004. The cubic root of 2562646081 is about 1368.4519215911.

The spelling of 2562646081 in words is "two billion, five hundred sixty-two million, six hundred forty-six thousand, eighty-one".