66152636487 has 24 divisors (see below), whose sum is σ = 109211142144. Its totient is φ = 37799156304.

The previous prime is 66152636467. The next prime is 66152636489. The reversal of 66152636487 is 78463625166.

66152636487 is a `hidden beast` number, since 6 + 6 + 1 + 526 + 36 + 4 + 87 = 666.

It is not a de Polignac number, because 66152636487 - 2⁷ = 66152636359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66152636489) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1789998 + ... + 1826580.

It is an arithmetic number, because the mean of its divisors is an integer number (4550464256).

Almost surely, 2^66152636487 is an apocalyptic number.

66152636487 is a deficient number, since it is larger than the sum of its proper divisors (43058505657).

66152636487 is a wasteful number, since it uses less digits than its factorization.

66152636487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65299 (or 65296 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The spelling of 66152636487 in words is "sixty-six billion, one hundred fifty-two million, six hundred thirty-six thousand, four hundred eighty-seven".