79477155547 has 16 divisors (see below), whose sum is σ = 84177964800. Its totient is φ = 74947632480.

The previous prime is 79477155539. The next prime is 79477155587. The reversal of 79477155547 is 74555177497.

It is a cyclic number.

It is not a de Polignac number, because 79477155547 - 2³ = 79477155539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79477155587) 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 15 ways as a sum of consecutive naturals, for example, 101397 + ... + 411382.

It is an arithmetic number, because the mean of its divisors is an integer number (5261122800).

Almost surely, 2^79477155547 is an apocalyptic number.

79477155547 is a deficient number, since it is larger than the sum of its proper divisors (4700809253).

79477155547 is a wasteful number, since it uses less digits than its factorization.

79477155547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512946.

The product of its digits is 43218000, while the sum is 61.

The spelling of 79477155547 in words is "seventy-nine billion, four hundred seventy-seven million, one hundred fifty-five thousand, five hundred forty-seven".