2755773952020 has 54 divisors (see below), whose sum is σ = 8359248546558. Its totient is φ = 734867114688.

The previous prime is 2755773952003. The next prime is 2755773952021. The reversal of 2755773952020 is 202593775572.

2755773952020 is a `hidden beast` number, since 2 + 7 + 557 + 7 + 39 + 52 + 0 + 2 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 1035778423824 + 1719995528196 = 1017732^2 + 1311486^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2755773952021) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 22210074 + ... + 22333806.

Almost surely, 2^{2755773952020} is an apocalyptic number.

2755773952020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2755773952020 is an abundant number, since it is smaller than the sum of its proper divisors (5603474594538).

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

2755773952020 is an frugal number, since it uses more digits than its factorization.

2755773952020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247481 (or 123743 counting only the distinct ones).

The product of its (nonzero) digits is 9261000, while the sum is 54.

The spelling of 2755773952020 in words is "two trillion, seven hundred fifty-five billion, seven hundred seventy-three million, nine hundred fifty-two thousand, twenty".