79977141552 has 720 divisors, whose sum is σ = 282986887680. Its totient is φ = 19013068800.

The previous prime is 79977141539. The next prime is 79977141553. The reversal of 79977141552 is 25514177997.

It is a junction number, because it is equal to n+sod(n) for n = 79977141492 and 79977141501.

It is not an unprimeable number, because it can be changed into a prime (79977141553) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 898619524 + ... + 898619612.

It is an arithmetic number, because the mean of its divisors is an integer number (393037344).

Almost surely, 2^79977141552 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 79977141552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141493443840).

79977141552 is an abundant number, since it is smaller than the sum of its proper divisors (203009746128).

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

79977141552 is a wasteful number, since it uses less digits than its factorization.

79977141552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 166 counting only the distinct ones).

The product of its digits is 5556600, while the sum is 57.

The spelling of 79977141552 in words is "seventy-nine billion, nine hundred seventy-seven million, one hundred forty-one thousand, five hundred fifty-two".