867788051188 has 12 divisors (see below), whose sum is σ = 1532068285860. Its totient is φ = 430054255232.

The previous prime is 867788051131. The next prime is 867788051189. The reversal of 867788051188 is 881150887768.

It can be written as a sum of positive squares in 2 ways, for example, as 443846423524 + 423941627664 = 666218^2 + 651108^2 .

It is a super-2 number, since 2×867788051188² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867788051189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 959942083 + ... + 959942986.

It is an arithmetic number, because the mean of its divisors is an integer number (127672357155).

Almost surely, 2^867788051188 is an apocalyptic number.

It is an amenable number.

867788051188 is a deficient number, since it is larger than the sum of its proper divisors (664280234672).

867788051188 is a wasteful number, since it uses less digits than its factorization.

867788051188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919885186 (or 1919885184 counting only the distinct ones).

The product of its (nonzero) digits is 48168960, while the sum is 67.

The spelling of 867788051188 in words is "eight hundred sixty-seven billion, seven hundred eighty-eight million, fifty-one thousand, one hundred eighty-eight".