71900185020 has 48 divisors (see below), whose sum is σ = 203313807648. Its totient is φ = 18983545600.

The previous prime is 71900184989. The next prime is 71900185031. The reversal of 71900185020 is 2058100917.

It is a super-3 number, since 3×71900185020³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5926299 + ... + 5938418.

It is an arithmetic number, because the mean of its divisors is an integer number (4235704326).

Almost surely, 2^71900185020 is an apocalyptic number.

It is an amenable number.

71900185020 is an abundant number, since it is smaller than the sum of its proper divisors (131413622628).

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

71900185020 is a wasteful number, since it uses less digits than its factorization.

71900185020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11864830 (or 11864828 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 33.

Adding to 71900185020 its reverse (2058100917), we get a palindrome (73958285937).

The spelling of 71900185020 in words is "seventy-one billion, nine hundred million, one hundred eighty-five thousand, twenty".