79681562603 has 2 divisors, whose sum is σ = 79681562604. Its totient is φ = 79681562602.

The previous prime is 79681562599. The next prime is 79681562621. The reversal of 79681562603 is 30626518697.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79681562603 - 2² = 79681562599 is a prime.

It is not a weakly prime, because it can be changed into another prime (79681562693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39840781301 + 39840781302.

It is an arithmetic number, because the mean of its divisors is an integer number (39840781302).

Almost surely, 2^79681562603 is an apocalyptic number.

79681562603 is a deficient number, since it is larger than the sum of its proper divisors (1).

79681562603 is an equidigital number, since it uses as much as digits as its factorization.

79681562603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 79681562603 in words is "seventy-nine billion, six hundred eighty-one million, five hundred sixty-two thousand, six hundred three".