79748831945 has 8 divisors (see below), whose sum is σ = 96109323336. Its totient is φ = 63525248896.

The previous prime is 79748831941. The next prime is 79748831951. The reversal of 79748831945 is 54913884797.

It can be written as a sum of positive squares in 4 ways, for example, as 3154394896 + 76594437049 = 56164^2 + 276757^2 .

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 79748831945 - 2² = 79748831941 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79748831941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34225802 + ... + 34228131.

It is an arithmetic number, because the mean of its divisors is an integer number (12013665417).

Almost surely, 2^79748831945 is an apocalyptic number.

It is an amenable number.

79748831945 is a deficient number, since it is larger than the sum of its proper divisors (16360491391).

79748831945 is a wasteful number, since it uses less digits than its factorization.

79748831945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68454171.

The product of its digits is 60963840, while the sum is 65.

The spelling of 79748831945 in words is "seventy-nine billion, seven hundred forty-eight million, eight hundred thirty-one thousand, nine hundred forty-five".