861124754652 has 288 divisors, whose sum is σ = 2312399093760. Its totient is φ = 248613425280.

The previous prime is 861124754639. The next prime is 861124754681. The reversal of 861124754652 is 256457421168.

It is a super-2 number, since 2×861124754652² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 861124754595 and 861124754604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 256361749 + ... + 256365107.

It is an arithmetic number, because the mean of its divisors is an integer number (8029163520).

Almost surely, 2^861124754652 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 861124754652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1156199546880).

861124754652 is an abundant number, since it is smaller than the sum of its proper divisors (1451274339108).

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

861124754652 is a wasteful number, since it uses less digits than its factorization.

861124754652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3541 (or 3520 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 51.

The spelling of 861124754652 in words is "eight hundred sixty-one billion, one hundred twenty-four million, seven hundred fifty-four thousand, six hundred fifty-two".