186720479064 has 192 divisors, whose sum is σ = 615997923840. Its totient is φ = 49877683200.

The previous prime is 186720479051. The next prime is 186720479069. The reversal of 186720479064 is 460974027681.

It is a self number, because there is not a number n which added to its sum of digits gives 186720479064.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (186720479069) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1221607 + ... + 1365929.

It is an arithmetic number, because the mean of its divisors is an integer number (3208322520).

Almost surely, 2^186720479064 is an apocalyptic number.

186720479064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 186720479064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307998961920).

186720479064 is an abundant number, since it is smaller than the sum of its proper divisors (429277444776).

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

186720479064 is a wasteful number, since it uses less digits than its factorization.

186720479064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144510 (or 144503 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The spelling of 186720479064 in words is "one hundred eighty-six billion, seven hundred twenty million, four hundred seventy-nine thousand, sixty-four".