2755556620380 has 72 divisors (see below), whose sum is σ = 8366806266000. Its totient is φ = 734086789632.

The previous prime is 2755556620373. The next prime is 2755556620393. The reversal of 2755556620380 is 830266555572.

It is a happy number.

2755556620380 is a `hidden beast` number, since 2 + 7 + 5 + 5 + 5 + 5 + 6 + 620 + 3 + 8 + 0 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7404430 + ... + 7767669.

Almost surely, 2^{2755556620380} is an apocalyptic number.

2755556620380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2755556620380 is an abundant number, since it is smaller than the sum of its proper divisors (5611249645620).

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

2755556620380 is a wasteful number, since it uses less digits than its factorization.

2755556620380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15173123 (or 15173118 counting only the distinct ones).

The product of its (nonzero) digits is 15120000, while the sum is 54.

The spelling of 2755556620380 in words is "two trillion, seven hundred fifty-five billion, five hundred fifty-six million, six hundred twenty thousand, three hundred eighty".