863772215041 has 12 divisors (see below), whose sum is σ = 886677615684. Its totient is φ = 840954857600.

The previous prime is 863772215029. The next prime is 863772215063. The reversal of 863772215041 is 140512277368.

It can be written as a sum of positive squares in 2 ways, for example, as 126810058816 + 736962156225 = 356104^2 + 858465^2 .

It is not a de Polignac number, because 863772215041 - 2¹⁹ = 863771690753 is a prime.

It is a super-3 number, since 3×863772215041³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 863772214982 and 863772215000.

It is not an unprimeable number, because it can be changed into a prime (863772215011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135831420 + ... + 135837778.

It is an arithmetic number, because the mean of its divisors is an integer number (73889801307).

Almost surely, 2^863772215041 is an apocalyptic number.

It is an amenable number.

863772215041 is a deficient number, since it is larger than the sum of its proper divisors (22905400643).

863772215041 is an frugal number, since it uses more digits than its factorization.

863772215041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13280 (or 6921 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 863772215041 in words is "eight hundred sixty-three billion, seven hundred seventy-two million, two hundred fifteen thousand, forty-one".