20270771776660 has 24 divisors (see below), whose sum is σ = 42990092227656. Its totient is φ = 8028028425600.

The previous prime is 20270771776639. The next prime is 20270771776681. The reversal of 20270771776660 is 6667717707202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20270771776639) and next prime (20270771776681).

It can be written as a sum of positive squares in 4 ways, for example, as 2833148774416 + 17437623002244 = 1683196^2 + 4175838^2 .

It is a super-2 number, since 2×20270771776660² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20270771776595 and 20270771776604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5017515747 + ... + 5017519786.

It is an arithmetic number, because the mean of its divisors is an integer number (1791253842819).

Almost surely, 2^{20270771776660} is an apocalyptic number.

20270771776660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20270771776660 is an abundant number, since it is smaller than the sum of its proper divisors (22719320450996).

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

20270771776660 is a wasteful number, since it uses less digits than its factorization.

20270771776660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10035035643 (or 10035035641 counting only the distinct ones).

The product of its (nonzero) digits is 14521248, while the sum is 58.

The spelling of 20270771776660 in words is "twenty trillion, two hundred seventy billion, seven hundred seventy-one million, seven hundred seventy-six thousand, six hundred sixty".