2531878066 has 16 divisors (see below), whose sum is σ = 3922265088. Its totient is φ = 1224496800.

The previous prime is 2531878039. The next prime is 2531878073. The reversal of 2531878066 is 6608781352.

2531878066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 132471 + ... + 150373.

It is an arithmetic number, because the mean of its divisors is an integer number (245141568).

Almost surely, 2^2531878066 is an apocalyptic number.

2531878066 is a deficient number, since it is larger than the sum of its proper divisors (1390387022).

2531878066 is a wasteful number, since it uses less digits than its factorization.

2531878066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20217.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 2531878066 is about 50317.7708766992. The cubic root of 2531878066 is about 1362.9531534915.

The spelling of 2531878066 in words is "two billion, five hundred thirty-one million, eight hundred seventy-eight thousand, sixty-six".