2478561811 has 8 divisors (see below), whose sum is σ = 2821446144. Its totient is φ = 2155270920.

The previous prime is 2478561769. The next prime is 2478561881. The reversal of 2478561811 is 1181658742.

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

It is not a de Polignac number, because 2478561811 - 2¹¹ = 2478559763 is a prime.

It is a super-2 number, since 2×2478561811² = 12286537301895199442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2478561881) 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, 4898091 + ... + 4898596.

It is an arithmetic number, because the mean of its divisors is an integer number (352680768).

Almost surely, 2^2478561811 is an apocalyptic number.

2478561811 is a deficient number, since it is larger than the sum of its proper divisors (342884333).

2478561811 is a wasteful number, since it uses less digits than its factorization.

2478561811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9796721.

The product of its digits is 107520, while the sum is 43.

The square root of 2478561811 is about 49785.1565328462. The cubic root of 2478561811 is about 1353.3181861018.

The spelling of 2478561811 in words is "two billion, four hundred seventy-eight million, five hundred sixty-one thousand, eight hundred eleven".