2780055505553 has 8 divisors (see below), whose sum is σ = 2807419358016. Its totient is φ = 2752698826800.

The previous prime is 2780055505483. The next prime is 2780055505573. The reversal of 2780055505553 is 3555055500872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2780055505553 - 2²² = 2780051311249 is a prime.

It is a super-2 number, since 2×2780055505553² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2780055505573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1012883 + ... + 2566328.

It is an arithmetic number, because the mean of its divisors is an integer number (350927419752).

Almost surely, 2^{2780055505553} is an apocalyptic number.

It is an amenable number.

2780055505553 is a deficient number, since it is larger than the sum of its proper divisors (27363852463).

2780055505553 is a wasteful number, since it uses less digits than its factorization.

2780055505553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3586855.

The product of its (nonzero) digits is 5250000, while the sum is 50.

The spelling of 2780055505553 in words is "two trillion, seven hundred eighty billion, fifty-five million, five hundred five thousand, five hundred fifty-three".