178212056452 has 12 divisors (see below), whose sum is σ = 312356128336. Its totient is φ = 88967448360.

The previous prime is 178212056389. The next prime is 178212056459. The reversal of 178212056452 is 254650212871.

It is a junction number, because it is equal to n+sod(n) for n = 178212056399 and 178212056408.

It is not an unprimeable number, because it can be changed into a prime (178212056459) 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 3 ways as a sum of consecutive naturals, for example, 34642074 + ... + 34647217.

Almost surely, 2^178212056452 is an apocalyptic number.

It is an amenable number.

178212056452 is a deficient number, since it is larger than the sum of its proper divisors (134144071884).

178212056452 is a wasteful number, since it uses less digits than its factorization.

178212056452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69289938 (or 69289936 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

The spelling of 178212056452 in words is "one hundred seventy-eight billion, two hundred twelve million, fifty-six thousand, four hundred fifty-two".