7988941805501 has 2 divisors, whose sum is σ = 7988941805502. Its totient is φ = 7988941805500.

The previous prime is 7988941805443. The next prime is 7988941805513. The reversal of 7988941805501 is 1055081498897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7373674133401 + 615267672100 = 2715451^2 + 784390^2 .

It is a cyclic number.

It is not a de Polignac number, because 7988941805501 - 2¹⁰ = 7988941804477 is a prime.

It is a super-2 number, since 2×7988941805501² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7988941805561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3994470902750 + 3994470902751.

It is an arithmetic number, because the mean of its divisors is an integer number (3994470902751).

Almost surely, 2^{7988941805501} is an apocalyptic number.

It is an amenable number.

7988941805501 is a deficient number, since it is larger than the sum of its proper divisors (1).

7988941805501 is an equidigital number, since it uses as much as digits as its factorization.

7988941805501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29030400, while the sum is 65.

The spelling of 7988941805501 in words is "seven trillion, nine hundred eighty-eight billion, nine hundred forty-one million, eight hundred five thousand, five hundred one".