79779732480 has 528 divisors, whose sum is σ = 334532203200. Its totient is φ = 17161519104.

The previous prime is 79779732433. The next prime is 79779732503. The reversal of 79779732480 is 8423797797.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5476246 + ... + 5490794.

Almost surely, 2^79779732480 is an apocalyptic number.

79779732480 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79779732480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167266101600).

79779732480 is an abundant number, since it is smaller than the sum of its proper divisors (254752470720).

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

79779732480 is a wasteful number, since it uses less digits than its factorization.

79779732480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14604 (or 14583 counting only the distinct ones).

The product of its (nonzero) digits is 37340352, while the sum is 63.

The spelling of 79779732480 in words is "seventy-nine billion, seven hundred seventy-nine million, seven hundred thirty-two thousand, four hundred eighty".