79405000000 has 112 divisors (see below), whose sum is σ = 196973519184. Its totient is φ = 31760000000.

The previous prime is 79404999953. The next prime is 79405000043. The reversal of 79405000000 is 50497.

It can be written as a sum of positive squares in 8 ways, for example, as 75233906944 + 4171093056 = 274288^2 + 64584^2 .

It is a sliding number, since 79405000000 = 1280000000 + 78125000000 and 1/1280000000 + 1/78125000000 = 0.00000000079405000000.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4992060 + ... + 5007940.

Almost surely, 2^79405000000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79405000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98486759592).

79405000000 is an abundant number, since it is smaller than the sum of its proper divisors (117568519184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79405000000 is an frugal number, since it uses more digits than its factorization.

79405000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15928 (or 15888 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

Adding to 79405000000 its reverse (50497), we get a palindrome (79405050497).

The spelling of 79405000000 in words is "seventy-nine billion, four hundred five million", and thus it is an aban number.