7126989663 has 8 divisors (see below), whose sum is σ = 9505955968. Its totient is φ = 4749674904.

The previous prime is 7126989641. The next prime is 7126989677. The reversal of 7126989663 is 3669896217.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7126989663 - 2¹⁴ = 7126973279 is a prime.

It is the 84422-nd Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7126989263) by changing a digit.

It is a nontrivial repunit in base 84421.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402781 + ... + 420102.

It is an arithmetic number, because the mean of its divisors is an integer number (1188244496).

Almost surely, 2^7126989663 is an apocalyptic number.

7126989663 is a deficient number, since it is larger than the sum of its proper divisors (2378966305).

7126989663 is a wasteful number, since it uses less digits than its factorization.

7126989663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825773.

The product of its digits is 5878656, while the sum is 57.

The square root of 7126989663 is about 84421.5000044420. The cubic root of 7126989663 is about 1924.4296652327.

The spelling of 7126989663 in words is "seven billion, one hundred twenty-six million, nine hundred eighty-nine thousand, six hundred sixty-three".