79222748400 has 180 divisors, whose sum is σ = 278406005280. Its totient is φ = 20858572800.

The previous prime is 79222748393. The next prime is 79222748411. The reversal of 79222748400 is 484722297.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 145120 + ... + 423680.

Almost surely, 2^79222748400 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 79222748400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139203002640).

79222748400 is an abundant number, since it is smaller than the sum of its proper divisors (199183256880).

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

79222748400 is a wasteful number, since it uses less digits than its factorization.

79222748400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278664 (or 278650 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 79222748400 in words is "seventy-nine billion, two hundred twenty-two million, seven hundred forty-eight thousand, four hundred".