2668551437 has 2 divisors, whose sum is σ = 2668551438. Its totient is φ = 2668551436.

The previous prime is 2668551367. The next prime is 2668551467. The reversal of 2668551437 is 7341558662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2324300521 + 344250916 = 48211^2 + 18554^2 .

It is a cyclic number.

It is not a de Polignac number, because 2668551437 - 2⁸ = 2668551181 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2668551391 and 2668551400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2668551467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1334275718 + 1334275719.

It is an arithmetic number, because the mean of its divisors is an integer number (1334275719).

Almost surely, 2^2668551437 is an apocalyptic number.

It is an amenable number.

2668551437 is a deficient number, since it is larger than the sum of its proper divisors (1).

2668551437 is an equidigital number, since it uses as much as digits as its factorization.

2668551437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 47.

The square root of 2668551437 is about 51658.0239362676. The cubic root of 2668551437 is about 1387.0491784506.

The spelling of 2668551437 in words is "two billion, six hundred sixty-eight million, five hundred fifty-one thousand, four hundred thirty-seven".