2780252805550 has 48 divisors (see below), whose sum is σ = 5641931750400. Its totient is φ = 1010903160800.

The previous prime is 2780252805521. The next prime is 2780252805587. The reversal of 2780252805550 is 555082520872.

It is a super-2 number, since 2×2780252805550² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2780252805494 and 2780252805503.

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, 5568081 + ... + 6046819.

It is an arithmetic number, because the mean of its divisors is an integer number (117540244800).

Almost surely, 2^{2780252805550} is an apocalyptic number.

2780252805550 is an abundant number, since it is smaller than the sum of its proper divisors (2861678944850).

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

2780252805550 is a wasteful number, since it uses less digits than its factorization.

2780252805550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489321 (or 489316 counting only the distinct ones).

The product of its (nonzero) digits is 2240000, while the sum is 49.

The spelling of 2780252805550 in words is "two trillion, seven hundred eighty billion, two hundred fifty-two million, eight hundred five thousand, five hundred fifty".