20452756892 has 12 divisors (see below), whose sum is σ = 35795541096. Its totient is φ = 10225459440.

The previous prime is 20452756859. The next prime is 20452756901. The reversal of 20452756892 is 29865725402.

It is a self number, because there is not a number n which added to its sum of digits gives 20452756892.

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, 178403 + ... + 269690.

It is an arithmetic number, because the mean of its divisors is an integer number (2982961758).

Almost surely, 2^20452756892 is an apocalyptic number.

It is an amenable number.

20452756892 is a deficient number, since it is larger than the sum of its proper divisors (15342784204).

20452756892 is a wasteful number, since it uses less digits than its factorization.

20452756892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459508 (or 459506 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 20452756892 in words is "twenty billion, four hundred fifty-two million, seven hundred fifty-six thousand, eight hundred ninety-two".