2780550005 has 8 divisors (see below), whose sum is σ = 3532934232. Its totient is φ = 2093590528.

The previous prime is 2780549983. The next prime is 2780550061. The reversal of 2780550005 is 5000550872.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1471412881 + 1309137124 = 38359^2 + 36182^2 .

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

It is not a de Polignac number, because 2780550005 - 2⁸ = 2780549749 is a prime.

It is a Duffinian number.

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, 16356092 + ... + 16356261.

It is an arithmetic number, because the mean of its divisors is an integer number (441616779).

Almost surely, 2^2780550005 is an apocalyptic number.

It is an amenable number.

2780550005 is a deficient number, since it is larger than the sum of its proper divisors (752384227).

2780550005 is a wasteful number, since it uses less digits than its factorization.

2780550005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32712375.

The product of its (nonzero) digits is 14000, while the sum is 32.

The square root of 2780550005 is about 52730.9207676103. The cubic root of 2780550005 is about 1406.1885907538.

The spelling of 2780550005 in words is "two billion, seven hundred eighty million, five hundred fifty thousand, five".