879745547978 has 16 divisors (see below), whose sum is σ = 1515351183840. Its totient is φ = 378837795600.

The previous prime is 879745547939. The next prime is 879745547999.

879745547978 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×879745547978² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1052326793 + ... + 1052327628.

It is an arithmetic number, because the mean of its divisors is an integer number (94709448990).

Almost surely, 2^879745547978 is an apocalyptic number.

879745547978 is a deficient number, since it is larger than the sum of its proper divisors (635605635862).

879745547978 is a wasteful number, since it uses less digits than its factorization.

879745547978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2104654453.

The product of its digits is 4978713600, while the sum is 80.

The spelling of 879745547978 in words is "eight hundred seventy-nine billion, seven hundred forty-five million, five hundred forty-seven thousand, nine hundred seventy-eight".