79438444254 has 144 divisors (see below), whose sum is σ = 204650448912. Its totient is φ = 23004393984.

The previous prime is 79438444249. The next prime is 79438444259. The reversal of 79438444254 is 45244483497.

79438444254 is a `hidden beast` number, since 7 + 9 + 4 + 384 + 4 + 4 + 254 = 666.

It is an interprime number because it is at equal distance from previous prime (79438444249) and next prime (79438444259).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 79438444254.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79438444259) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1367832 + ... + 1424724.

It is an arithmetic number, because the mean of its divisors is an integer number (1421183673).

Almost surely, 2^79438444254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79438444254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102325224456).

79438444254 is an abundant number, since it is smaller than the sum of its proper divisors (125212004658).

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

79438444254 is a wasteful number, since it uses less digits than its factorization.

79438444254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56953 (or 56928 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 54.

The spelling of 79438444254 in words is "seventy-nine billion, four hundred thirty-eight million, four hundred forty-four thousand, two hundred fifty-four".