861372411711 has 16 divisors (see below), whose sum is σ = 1320427175424. Its totient is φ = 489265422624.

The previous prime is 861372411709. The next prime is 861372411719. The reversal of 861372411711 is 117114273168.

It is not a de Polignac number, because 861372411711 - 2¹ = 861372411709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861372411719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122804080 + ... + 122811093.

It is an arithmetic number, because the mean of its divisors is an integer number (82526698464).

Almost surely, 2^861372411711 is an apocalyptic number.

861372411711 is a deficient number, since it is larger than the sum of its proper divisors (459054763713).

861372411711 is a wasteful number, since it uses less digits than its factorization.

861372411711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245615350.

The product of its digits is 56448, while the sum is 42.

Adding to 861372411711 its reverse (117114273168), we get a palindrome (978486684879).

The spelling of 861372411711 in words is "eight hundred sixty-one billion, three hundred seventy-two million, four hundred eleven thousand, seven hundred eleven".