20786534252 has 24 divisors (see below), whose sum is σ = 39688140240. Its totient is φ = 9447292160.

The previous prime is 20786534231. The next prime is 20786534267. The reversal of 20786534252 is 25243568702.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424208 + ... + 470664.

It is an arithmetic number, because the mean of its divisors is an integer number (1653672510).

Almost surely, 2^20786534252 is an apocalyptic number.

20786534252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20786534252 is a deficient number, since it is larger than the sum of its proper divisors (18901605988).

20786534252 is a wasteful number, since it uses less digits than its factorization.

20786534252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56641 (or 56639 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 44.

The spelling of 20786534252 in words is "twenty billion, seven hundred eighty-six million, five hundred thirty-four thousand, two hundred fifty-two".