79866251153 has 8 divisors (see below), whose sum is σ = 86366699496. Its totient is φ = 73416787200.

The previous prime is 79866251131. The next prime is 79866251159. The reversal of 79866251153 is 35115266897.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9899653009 + 69966598144 = 99497^2 + 264512^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79866251153 - 2¹² = 79866247057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79866251095 and 79866251104.

It is not an unprimeable number, because it can be changed into a prime (79866251159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12742838 + ... + 12749103.

It is an arithmetic number, because the mean of its divisors is an integer number (10795837437).

Almost surely, 2^79866251153 is an apocalyptic number.

It is an amenable number.

79866251153 is a deficient number, since it is larger than the sum of its proper divisors (6500448343).

79866251153 is a wasteful number, since it uses less digits than its factorization.

79866251153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25492195.

The product of its digits is 2721600, while the sum is 53.

The spelling of 79866251153 in words is "seventy-nine billion, eight hundred sixty-six million, two hundred fifty-one thousand, one hundred fifty-three".