79481642402 has 18 divisors (see below), whose sum is σ = 119793933777. Its totient is φ = 39551238400.

The previous prime is 79481642399. The next prime is 79481642411. The reversal of 79481642402 is 20424618497.

It can be written as a sum of positive squares in 2 ways, for example, as 63302056801 + 16179585601 = 251599^2 + 127199^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=199351.

It is a Duffinian number.

It is an unprimeable number.

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 in 8 ways as a sum of consecutive naturals, for example, 123996002 + ... + 123996642.

Almost surely, 2^79481642402 is an apocalyptic number.

79481642402 is a deficient number, since it is larger than the sum of its proper divisors (40312291375).

79481642402 is an frugal number, since it uses more digits than its factorization.

79481642402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906 (or 954 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 79481642402 in words is "seventy-nine billion, four hundred eighty-one million, six hundred forty-two thousand, four hundred two".