79487002081 has 2 divisors, whose sum is σ = 79487002082. Its totient is φ = 79487002080.

The previous prime is 79487002079. The next prime is 79487002109. The reversal of 79487002081 is 18020078497.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42690171456 + 36796830625 = 206616^2 + 191825^2 .

It is a cyclic number.

It is not a de Polignac number, because 79487002081 - 2¹ = 79487002079 is a prime.

It is a super-2 number, since 2×79487002081² (a number of 23 digits) contains 22 as substring.

Together with 79487002079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (79487002181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39743501040 + 39743501041.

It is an arithmetic number, because the mean of its divisors is an integer number (39743501041).

Almost surely, 2^79487002081 is an apocalyptic number.

It is an amenable number.

79487002081 is a deficient number, since it is larger than the sum of its proper divisors (1).

79487002081 is an equidigital number, since it uses as much as digits as its factorization.

79487002081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 46.

The spelling of 79487002081 in words is "seventy-nine billion, four hundred eighty-seven million, two thousand, eighty-one".