8611111420 has 12 divisors (see below), whose sum is σ = 18083334024. Its totient is φ = 3444444560.

The previous prime is 8611111367. The next prime is 8611111441. The reversal of 8611111420 is 241111168.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215277766 + ... + 215277805.

It is an arithmetic number, because the mean of its divisors is an integer number (1506944502).

Almost surely, 2^8611111420 is an apocalyptic number.

It is an amenable number.

8611111420 is an abundant number, since it is smaller than the sum of its proper divisors (9472222604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8611111420 is a wasteful number, since it uses less digits than its factorization.

8611111420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430555580 (or 430555578 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 25.

The square root of 8611111420 is about 92796.0743781761. The cubic root of 8611111420 is about 2049.6816019482.

Adding to 8611111420 its reverse (241111168), we get a palindrome (8852222588).

The spelling of 8611111420 in words is "eight billion, six hundred eleven million, one hundred eleven thousand, four hundred twenty".