79188134890 has 8 divisors (see below), whose sum is σ = 142538642820. Its totient is φ = 31675253952.

The previous prime is 79188134821. The next prime is 79188134891. The reversal of 79188134890 is 9843188197.

It can be written as a sum of positive squares in 2 ways, for example, as 72264730041 + 6923404849 = 268821^2 + 83207^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (79188134891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3959406735 + ... + 3959406754.

Almost surely, 2^79188134890 is an apocalyptic number.

79188134890 is a deficient number, since it is larger than the sum of its proper divisors (63350507930).

79188134890 is a wasteful number, since it uses less digits than its factorization.

79188134890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7918813496.

The product of its (nonzero) digits is 3483648, while the sum is 58.

The spelling of 79188134890 in words is "seventy-nine billion, one hundred eighty-eight million, one hundred thirty-four thousand, eight hundred ninety".