42878788756587 has 144 divisors (see below), whose sum is σ = 74978263930752. Its totient is φ = 24416459907840.

The previous prime is 42878788756579. The next prime is 42878788756591. The reversal of 42878788756587 is 78565788787824.

It is a happy number.

42878788756587 is a `hidden beast` number, since 428 + 7 + 8 + 7 + 8 + 87 + 56 + 58 + 7 = 666.

It is not a de Polignac number, because 42878788756587 - 2³ = 42878788756579 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42878788756497 and 42878788756506.

It is not an unprimeable number, because it can be changed into a prime (42878788756487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4647095068 + ... + 4647104294.

It is an arithmetic number, because the mean of its divisors is an integer number (520682388408).

Almost surely, 2^{42878788756587} is an apocalyptic number.

42878788756587 is a deficient number, since it is larger than the sum of its proper divisors (32099475174165).

42878788756587 is an equidigital number, since it uses as much as digits as its factorization.

42878788756587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10580 (or 10561 counting only the distinct ones).

The product of its digits is 94411161600, while the sum is 90.

The spelling of 42878788756587 in words is "forty-two trillion, eight hundred seventy-eight billion, seven hundred eighty-eight million, seven hundred fifty-six thousand, five hundred eighty-seven".