854161067172 has 72 divisors (see below), whose sum is σ = 2353609489728. Its totient is φ = 236173544640.

The previous prime is 854161067147. The next prime is 854161067173. The reversal of 854161067172 is 271760161458.

It is a super-2 number, since 2×854161067172² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (854161067173) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5209903 + ... + 5371350.

Almost surely, 2^854161067172 is an apocalyptic number.

It is an amenable number.

854161067172 is an abundant number, since it is smaller than the sum of its proper divisors (1499448422556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

854161067172 is a wasteful number, since it uses less digits than its factorization.

854161067172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10581329 (or 10581296 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 48.

The spelling of 854161067172 in words is "eight hundred fifty-four billion, one hundred sixty-one million, sixty-seven thousand, one hundred seventy-two".