178820669012 has 48 divisors (see below), whose sum is σ = 325376714880. Its totient is φ = 85923532800.

The previous prime is 178820668981. The next prime is 178820669017. The reversal of 178820669012 is 210966028871.

It is a super-2 number, since 2×178820669012² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (178820669017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14164439 + ... + 14177057.

It is an arithmetic number, because the mean of its divisors is an integer number (6778681560).

Almost surely, 2^178820669012 is an apocalyptic number.

It is an amenable number.

178820669012 is a deficient number, since it is larger than the sum of its proper divisors (146556045868).

178820669012 is a wasteful number, since it uses less digits than its factorization.

178820669012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13952 (or 13950 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 50.

The spelling of 178820669012 in words is "one hundred seventy-eight billion, eight hundred twenty million, six hundred sixty-nine thousand, twelve".