79889416990 has 16 divisors (see below), whose sum is σ = 152259830352. Its totient is φ = 30076015744.

The previous prime is 79889416961. The next prime is 79889416991. The reversal of 79889416990 is 9961498897.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79889416991) 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 7 ways as a sum of consecutive naturals, for example, 234968704 + ... + 234969043.

It is an arithmetic number, because the mean of its divisors is an integer number (9516239397).

Almost surely, 2^79889416990 is an apocalyptic number.

79889416990 is a deficient number, since it is larger than the sum of its proper divisors (72370413362).

79889416990 is a wasteful number, since it uses less digits than its factorization.

79889416990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469937771.

The product of its (nonzero) digits is 70543872, while the sum is 70.

The spelling of 79889416990 in words is "seventy-nine billion, eight hundred eighty-nine million, four hundred sixteen thousand, nine hundred ninety".