7982521403 has 2 divisors, whose sum is σ = 7982521404. Its totient is φ = 7982521402.

The previous prime is 7982521307. The next prime is 7982521429. The reversal of 7982521403 is 3041252897.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7982521403 - 2²² = 7978327099 is a prime.

It is not a weakly prime, because it can be changed into another prime (7982521103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3991260701 + 3991260702.

It is an arithmetic number, because the mean of its divisors is an integer number (3991260702).

Almost surely, 2^7982521403 is an apocalyptic number.

7982521403 is a deficient number, since it is larger than the sum of its proper divisors (1).

7982521403 is an equidigital number, since it uses as much as digits as its factorization.

7982521403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 7982521403 is about 89344.9573451127. The cubic root of 7982521403 is about 1998.5423881920.

The spelling of 7982521403 in words is "seven billion, nine hundred eighty-two million, five hundred twenty-one thousand, four hundred three".