79783977603 has 16 divisors (see below), whose sum is σ = 119185894656. Its totient is φ = 47047062240.

The previous prime is 79783977583. The next prime is 79783977641. The reversal of 79783977603 is 30677938797.

It is not a de Polignac number, because 79783977603 - 2⁵ = 79783977571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79783977653) 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 in 15 ways as a sum of consecutive naturals, for example, 32670351 + ... + 32672792.

It is an arithmetic number, because the mean of its divisors is an integer number (7449118416).

Almost surely, 2^79783977603 is an apocalyptic number.

79783977603 is a deficient number, since it is larger than the sum of its proper divisors (39401917053).

79783977603 is a wasteful number, since it uses less digits than its factorization.

79783977603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65343194.

The product of its (nonzero) digits is 84015792, while the sum is 66.

The spelling of 79783977603 in words is "seventy-nine billion, seven hundred eighty-three million, nine hundred seventy-seven thousand, six hundred three".