2780540801 has 8 divisors (see below), whose sum is σ = 2823609600. Its totient is φ = 2737668960.

The previous prime is 2780540797. The next prime is 2780540813. The reversal of 2780540801 is 1080450872.

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 2780540801 - 2² = 2780540797 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2780540881) 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, 20660 + ... + 77381.

It is an arithmetic number, because the mean of its divisors is an integer number (352951200).

Almost surely, 2^2780540801 is an apocalyptic number.

It is an amenable number.

2780540801 is a deficient number, since it is larger than the sum of its proper divisors (43068799).

2780540801 is an equidigital number, since it uses as much as digits as its factorization.

2780540801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98479.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 2780540801 is about 52730.8334942660. The cubic root of 2780540801 is about 1406.1870391933.

The spelling of 2780540801 in words is "two billion, seven hundred eighty million, five hundred forty thousand, eight hundred one".