79811065152 has 420 divisors, whose sum is σ = 296393471220. Its totient is φ = 21048201216.

The previous prime is 79811065127. The next prime is 79811065177. The reversal of 79811065152 is 25156011897.

It is an interprime number because it is at equal distance from previous prime (79811065127) and next prime (79811065177).

It can be written as a sum of positive squares in 2 ways, for example, as 49401285696 + 30409779456 = 222264^2 + 174384^2 .

It is a super-2 number, since 2×79811065152² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 79811065098 and 79811065107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 3290124 + ... + 3314292.

It is an arithmetic number, because the mean of its divisors is an integer number (705698741).

Almost surely, 2^79811065152 is an apocalyptic number.

79811065152 is a gapful number since it is divisible by the number (72) 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 79811065152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148196735610).

79811065152 is an abundant number, since it is smaller than the sum of its proper divisors (216582406068).

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

79811065152 is a wasteful number, since it uses less digits than its factorization.

79811065152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24220 (or 24194 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 45.

The spelling of 79811065152 in words is "seventy-nine billion, eight hundred eleven million, sixty-five thousand, one hundred fifty-two".