7578972943 has 2 divisors, whose sum is σ = 7578972944. Its totient is φ = 7578972942.

The previous prime is 7578972899. The next prime is 7578972953. The reversal of 7578972943 is 3492798757.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7578972943 - 2¹³ = 7578964751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7578972953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3789486471 + 3789486472.

It is an arithmetic number, because the mean of its divisors is an integer number (3789486472).

Almost surely, 2^7578972943 is an apocalyptic number.

7578972943 is a deficient number, since it is larger than the sum of its proper divisors (1).

7578972943 is an equidigital number, since it uses as much as digits as its factorization.

7578972943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26671680, while the sum is 61.

The square root of 7578972943 is about 87057.2968969287. The cubic root of 7578972943 is about 1964.2802599012.

The spelling of 7578972943 in words is "seven billion, five hundred seventy-eight million, nine hundred seventy-two thousand, nine hundred forty-three".