7505506979 has 2 divisors, whose sum is σ = 7505506980. Its totient is φ = 7505506978.

The previous prime is 7505506951. The next prime is 7505507011. The reversal of 7505506979 is 9796055057.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7505506979 - 2¹² = 7505502883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7505506979.

It is not a weakly prime, because it can be changed into another prime (7505506949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3752753489 + 3752753490.

It is an arithmetic number, because the mean of its divisors is an integer number (3752753490).

Almost surely, 2^7505506979 is an apocalyptic number.

7505506979 is a deficient number, since it is larger than the sum of its proper divisors (1).

7505506979 is an equidigital number, since it uses as much as digits as its factorization.

7505506979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2976750, while the sum is 53.

The square root of 7505506979 is about 86634.3291022675. The cubic root of 7505506979 is about 1957.9127943478.

The spelling of 7505506979 in words is "seven billion, five hundred five million, five hundred six thousand, nine hundred seventy-nine".