7662981871959 has 16 divisors (see below), whose sum is σ = 10824381381888. Its totient is φ = 4805454806912.

The previous prime is 7662981871927. The next prime is 7662981871991. The reversal of 7662981871959 is 9591781892667.

It is an interprime number because it is at equal distance from previous prime (7662981871927) and next prime (7662981871991).

It is a cyclic number.

It is not a de Polignac number, because 7662981871959 - 2⁵ = 7662981871927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7662981875959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41949867 + ... + 42132140.

It is an arithmetic number, because the mean of its divisors is an integer number (676523836368).

Almost surely, 2^{7662981871959} is an apocalyptic number.

7662981871959 is a deficient number, since it is larger than the sum of its proper divisors (3161399509929).

7662981871959 is a wasteful number, since it uses less digits than its factorization.

7662981871959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84083814.

The product of its digits is 823011840, while the sum is 78.

The spelling of 7662981871959 in words is "seven trillion, six hundred sixty-two billion, nine hundred eighty-one million, eight hundred seventy-one thousand, nine hundred fifty-nine".