20785408582 has 8 divisors (see below), whose sum is σ = 31181975496. Its totient is φ = 10391416752.

The previous prime is 20785408561. The next prime is 20785408619. The reversal of 20785408582 is 28580458702.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 623463 + ... + 655954.

It is an arithmetic number, because the mean of its divisors is an integer number (3897746937).

Almost surely, 2^20785408582 is an apocalyptic number.

20785408582 is a deficient number, since it is larger than the sum of its proper divisors (10396566914).

20785408582 is a wasteful number, since it uses less digits than its factorization.

20785408582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287542.

The product of its (nonzero) digits is 1433600, while the sum is 49.

The spelling of 20785408582 in words is "twenty billion, seven hundred eighty-five million, four hundred eight thousand, five hundred eighty-two".