2478302561 has 16 divisors (see below), whose sum is σ = 2965334400. Its totient is φ = 2026284288.

The previous prime is 2478302557. The next prime is 2478302569. The reversal of 2478302561 is 1652038742.

It is a happy number.

It is not a de Polignac number, because 2478302561 - 2² = 2478302557 is a prime.

It is a super-3 number, since 3×2478302561³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (2478302569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56696 + ... + 90393.

It is an arithmetic number, because the mean of its divisors is an integer number (185333400).

Almost surely, 2^2478302561 is an apocalyptic number.

It is an amenable number.

2478302561 is a deficient number, since it is larger than the sum of its proper divisors (487031839).

2478302561 is a wasteful number, since it uses less digits than its factorization.

2478302561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147208.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 2478302561 is about 49782.5527770523. The cubic root of 2478302561 is about 1353.2710001394.

The spelling of 2478302561 in words is "two billion, four hundred seventy-eight million, three hundred two thousand, five hundred sixty-one".