20762585805428 has 12 divisors (see below), whose sum is σ = 36832258381380. Its totient is φ = 10239083410752.

The previous prime is 20762585805407. The next prime is 20762585805433. The reversal of 20762585805428 is 82450858526702.

It can be written as a sum of positive squares in 2 ways, for example, as 13498364176144 + 7264221629284 = 3674012^2 + 2695222^2 .

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, 35552372663 + ... + 35552373246.

It is an arithmetic number, because the mean of its divisors is an integer number (3069354865115).

Almost surely, 2^{20762585805428} is an apocalyptic number.

It is an amenable number.

20762585805428 is a deficient number, since it is larger than the sum of its proper divisors (16069672575952).

20762585805428 is a wasteful number, since it uses less digits than its factorization.

20762585805428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71104745986 (or 71104745984 counting only the distinct ones).

The product of its (nonzero) digits is 86016000, while the sum is 62.

The spelling of 20762585805428 in words is "twenty trillion, seven hundred sixty-two billion, five hundred eighty-five million, eight hundred five thousand, four hundred twenty-eight".