67061320020 has 36 divisors (see below), whose sum is σ = 203419337940. Its totient is φ = 17883018624.

The previous prime is 67061320003. The next prime is 67061320049. The reversal of 67061320020 is 2002316076.

It is a happy number.

67061320020 is a `hidden beast` number, since 6 + 7 + 0 + 613 + 20 + 0 + 20 = 666.

67061320020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 50285371536 + 16775948484 = 224244^2 + 129522^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186281265 + ... + 186281624.

It is an arithmetic number, because the mean of its divisors is an integer number (5650537165).

Almost surely, 2^67061320020 is an apocalyptic number.

67061320020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67061320020 is an abundant number, since it is smaller than the sum of its proper divisors (136358017920).

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

67061320020 is a wasteful number, since it uses less digits than its factorization.

67061320020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372562904 (or 372562899 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

Adding to 67061320020 its reverse (2002316076), we get a palindrome (69063636096).

The spelling of 67061320020 in words is "sixty-seven billion, sixty-one million, three hundred twenty thousand, twenty".