854978604479 has 8 divisors (see below), whose sum is σ = 905608169280. Its totient is φ = 804386451456.

The previous prime is 854978604463. The next prime is 854978604481. The reversal of 854978604479 is 974406879458.

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 854978604479 - 2⁴ = 854978604463 is a prime.

It is a super-2 number, since 2×854978604479² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854978604409) 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, 9305879 + ... + 9397304.

It is an arithmetic number, because the mean of its divisors is an integer number (113201021160).

Almost surely, 2^854978604479 is an apocalyptic number.

854978604479 is a deficient number, since it is larger than the sum of its proper divisors (50629564801).

854978604479 is a wasteful number, since it uses less digits than its factorization.

854978604479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18705889.

The product of its (nonzero) digits is 487710720, while the sum is 71.

The spelling of 854978604479 in words is "eight hundred fifty-four billion, nine hundred seventy-eight million, six hundred four thousand, four hundred seventy-nine".