79612278145 has 8 divisors (see below), whose sum is σ = 101154424104. Its totient is φ = 59943362304.

The previous prime is 79612278143. The next prime is 79612278191. The reversal of 79612278145 is 54187221697.

It can be written as a sum of positive squares in 4 ways, for example, as 6820777744 + 72791500401 = 82588^2 + 269799^2 .

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 79612278145 - 2¹ = 79612278143 is a prime.

It is a super-2 number, since 2×79612278145² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79612278092 and 79612278101.

It is not an unprimeable number, because it can be changed into a prime (79612278143) 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, 468307434 + ... + 468307603.

It is an arithmetic number, because the mean of its divisors is an integer number (12644303013).

Almost surely, 2^79612278145 is an apocalyptic number.

It is an amenable number.

79612278145 is a deficient number, since it is larger than the sum of its proper divisors (21542145959).

79612278145 is a wasteful number, since it uses less digits than its factorization.

79612278145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936615059.

The product of its digits is 1693440, while the sum is 52.

The spelling of 79612278145 in words is "seventy-nine billion, six hundred twelve million, two hundred seventy-eight thousand, one hundred forty-five".