877868861511 has 4 divisors (see below), whose sum is σ = 1170491815352. Its totient is φ = 585245907672.

The previous prime is 877868861473. The next prime is 877868861521. The reversal of 877868861511 is 115168868778.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 877868861511 - 2¹⁵ = 877868828743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (877868861521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146311476916 + ... + 146311476921.

It is an arithmetic number, because the mean of its divisors is an integer number (292622953838).

Almost surely, 2^877868861511 is an apocalyptic number.

877868861511 is a deficient number, since it is larger than the sum of its proper divisors (292622953841).

877868861511 is a wasteful number, since it uses less digits than its factorization.

877868861511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292622953840.

The product of its digits is 36126720, while the sum is 66.

The spelling of 877868861511 in words is "eight hundred seventy-seven billion, eight hundred sixty-eight million, eight hundred sixty-one thousand, five hundred eleven".