2605790751973 has 2 divisors, whose sum is σ = 2605790751974. Its totient is φ = 2605790751972.

The previous prime is 2605790751943. The next prime is 2605790751989. The reversal of 2605790751973 is 3791570975062.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2414101772644 + 191688979329 = 1553738^2 + 437823^2 .

It is a cyclic number.

It is not a de Polignac number, because 2605790751973 - 2¹³ = 2605790743781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2605790751913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1302895375986 + 1302895375987.

It is an arithmetic number, because the mean of its divisors is an integer number (1302895375987).

Almost surely, 2^{2605790751973} is an apocalyptic number.

It is an amenable number.

2605790751973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2605790751973 is an equidigital number, since it uses as much as digits as its factorization.

2605790751973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25004700, while the sum is 61.

The spelling of 2605790751973 in words is "two trillion, six hundred five billion, seven hundred ninety million, seven hundred fifty-one thousand, nine hundred seventy-three".