7671732521 has 2 divisors, whose sum is σ = 7671732522. Its totient is φ = 7671732520.

The previous prime is 7671732499. The next prime is 7671732559. The reversal of 7671732521 is 1252371767.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6779216896 + 892515625 = 82336^2 + 29875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7671732521 is a prime.

It is not a weakly prime, because it can be changed into another prime (7671735521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3835866260 + 3835866261.

It is an arithmetic number, because the mean of its divisors is an integer number (3835866261).

Almost surely, 2^7671732521 is an apocalyptic number.

It is an amenable number.

7671732521 is a deficient number, since it is larger than the sum of its proper divisors (1).

7671732521 is an equidigital number, since it uses as much as digits as its factorization.

7671732521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 123480, while the sum is 41.

The square root of 7671732521 is about 87588.4268667956. The cubic root of 7671732521 is about 1972.2614415041.

The spelling of 7671732521 in words is "seven billion, six hundred seventy-one million, seven hundred thirty-two thousand, five hundred twenty-one".