2547664242 has 16 divisors (see below), whose sum is σ = 5103813792. Its totient is φ = 847807200.

The previous prime is 2547664199. The next prime is 2547664279. The reversal of 2547664242 is 2424667452.

It is a junction number, because it is equal to n+sod(n) for n = 2547664194 and 2547664203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349648 + ... + 356859.

It is an arithmetic number, because the mean of its divisors is an integer number (318988362).

Almost surely, 2^2547664242 is an apocalyptic number.

2547664242 is an abundant number, since it is smaller than the sum of its proper divisors (2556149550).

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

2547664242 is a wasteful number, since it uses less digits than its factorization.

2547664242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707113.

The product of its digits is 645120, while the sum is 42.

The square root of 2547664242 is about 50474.3919428456. The cubic root of 2547664242 is about 1365.7799425717.

The spelling of 2547664242 in words is "two billion, five hundred forty-seven million, six hundred sixty-four thousand, two hundred forty-two".