862541428723540 has 12 divisors (see below), whose sum is σ = 1811337000319476. Its totient is φ = 345016571489408.

The previous prime is 862541428723523. The next prime is 862541428723561. The reversal of 862541428723540 is 45327824145268.

It can be written as a sum of positive squares in 2 ways, for example, as 600713237340304 + 261828191383236 = 24509452^2 + 16181106^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21563535718069 + ... + 21563535718108.

It is an arithmetic number, because the mean of its divisors is an integer number (150944750026623).

Almost surely, 2^{862541428723540} is an apocalyptic number.

It is an amenable number.

862541428723540 is an abundant number, since it is smaller than the sum of its proper divisors (948795571595936).

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

862541428723540 is a wasteful number, since it uses less digits than its factorization.

862541428723540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43127071436186 (or 43127071436184 counting only the distinct ones).

The product of its (nonzero) digits is 103219200, while the sum is 61.

The spelling of 862541428723540 in words is "eight hundred sixty-two trillion, five hundred forty-one billion, four hundred twenty-eight million, seven hundred twenty-three thousand, five hundred forty".