2605640054099 has 2 divisors, whose sum is σ = 2605640054100. Its totient is φ = 2605640054098.

The previous prime is 2605640054053. The next prime is 2605640054111. The reversal of 2605640054099 is 9904500465062.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2605640054099 - 2¹² = 2605640050003 is a prime.

It is not a weakly prime, because it can be changed into another prime (2605640054599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1302820027049 + 1302820027050.

It is an arithmetic number, because the mean of its divisors is an integer number (1302820027050).

Almost surely, 2^{2605640054099} is an apocalyptic number.

2605640054099 is a deficient number, since it is larger than the sum of its proper divisors (1).

2605640054099 is an equidigital number, since it uses as much as digits as its factorization.

2605640054099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2332800, while the sum is 50.

The spelling of 2605640054099 in words is "two trillion, six hundred five billion, six hundred forty million, fifty-four thousand, ninety-nine".