4081555679 has 2 divisors, whose sum is σ = 4081555680. Its totient is φ = 4081555678.

The previous prime is 4081555663. The next prime is 4081555693. The reversal of 4081555679 is 9765551804.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4081555679 - 2⁴ = 4081555663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4081555879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2040777839 + 2040777840.

It is an arithmetic number, because the mean of its divisors is an integer number (2040777840).

Almost surely, 2^4081555679 is an apocalyptic number.

4081555679 is a deficient number, since it is larger than the sum of its proper divisors (1).

4081555679 is an equidigital number, since it uses as much as digits as its factorization.

4081555679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512000, while the sum is 50.

The square root of 4081555679 is about 63887.0540798369. The cubic root of 4081555679 is about 1598.1170138828.

The spelling of 4081555679 in words is "four billion, eighty-one million, five hundred fifty-five thousand, six hundred seventy-nine".