79527559961 has 2 divisors, whose sum is σ = 79527559962. Its totient is φ = 79527559960.

The previous prime is 79527559927. The next prime is 79527559963. The reversal of 79527559961 is 16995572597.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41598049936 + 37929510025 = 203956^2 + 194755^2 .

It is a cyclic number.

It is not a de Polignac number, because 79527559961 - 2¹⁴ = 79527543577 is a prime.

It is a super-3 number, since 3×79527559961³ (a number of 34 digits) contains 333 as substring.

Together with 79527559963, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (79527559963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39763779980 + 39763779981.

It is an arithmetic number, because the mean of its divisors is an integer number (39763779981).

Almost surely, 2^79527559961 is an apocalyptic number.

It is an amenable number.

79527559961 is a deficient number, since it is larger than the sum of its proper divisors (1).

79527559961 is an equidigital number, since it uses as much as digits as its factorization.

79527559961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53581500, while the sum is 65.

The spelling of 79527559961 in words is "seventy-nine billion, five hundred twenty-seven million, five hundred fifty-nine thousand, nine hundred sixty-one".