877868861506 has 64 divisors (see below), whose sum is σ = 1638140184576. Its totient is φ = 343553472000.

The previous prime is 877868861473. The next prime is 877868861521. The reversal of 877868861506 is 605168868778.

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 31 ways as a sum of consecutive naturals, for example, 21909711 + ... + 21949741.

It is an arithmetic number, because the mean of its divisors is an integer number (25595940384).

Almost surely, 2^877868861506 is an apocalyptic number.

877868861506 is a deficient number, since it is larger than the sum of its proper divisors (760271323070).

877868861506 is a wasteful number, since it uses less digits than its factorization.

877868861506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41347.

The product of its (nonzero) digits is 216760320, while the sum is 70.

The spelling of 877868861506 in words is "eight hundred seventy-seven billion, eight hundred sixty-eight million, eight hundred sixty-one thousand, five hundred six".