186420061005 has 16 divisors (see below), whose sum is σ = 307893778944. Its totient is φ = 96216805440.

The previous prime is 186420060979. The next prime is 186420061007. The reversal of 186420061005 is 500160024681.

It is not a de Polignac number, because 186420061005 - 2⁶ = 186420060941 is a prime.

It is a super-2 number, since 2×186420061005² (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 (186420061007) 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, 200451214 + ... + 200452143.

It is an arithmetic number, because the mean of its divisors is an integer number (19243361184).

Almost surely, 2^186420061005 is an apocalyptic number.

186420061005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

186420061005 is a deficient number, since it is larger than the sum of its proper divisors (121473717939).

186420061005 is a wasteful number, since it uses less digits than its factorization.

186420061005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400903396.

The product of its (nonzero) digits is 11520, while the sum is 33.

Adding to 186420061005 its reverse (500160024681), we get a palindrome (686580085686).

The spelling of 186420061005 in words is "one hundred eighty-six billion, four hundred twenty million, sixty-one thousand, five".