2661878083 has 2 divisors, whose sum is σ = 2661878084. Its totient is φ = 2661878082.

The previous prime is 2661878069. The next prime is 2661878101. The reversal of 2661878083 is 3808781662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2661878083 - 2²⁵ = 2628323651 is a prime.

It is not a weakly prime, because it can be changed into another prime (2661878053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330939041 + 1330939042.

It is an arithmetic number, because the mean of its divisors is an integer number (1330939042).

Almost surely, 2^2661878083 is an apocalyptic number.

2661878083 is a deficient number, since it is larger than the sum of its proper divisors (1).

2661878083 is an equidigital number, since it uses as much as digits as its factorization.

2661878083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 49.

The square root of 2661878083 is about 51593.3918539962. The cubic root of 2661878083 is about 1385.8919967384.

The spelling of 2661878083 in words is "two billion, six hundred sixty-one million, eight hundred seventy-eight thousand, eighty-three".