20187851082 has 32 divisors (see below), whose sum is σ = 48572275200. Its totient is φ = 5464380528.

The previous prime is 20187851081. The next prime is 20187851147. The reversal of 20187851082 is 28015878102.

It is a super-3 number, since 3×20187851082³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (20187851081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12648232 + ... + 12649827.

It is an arithmetic number, because the mean of its divisors is an integer number (1517883600).

Almost surely, 2^20187851082 is an apocalyptic number.

20187851082 is an abundant number, since it is smaller than the sum of its proper divisors (28384424118).

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

20187851082 is a wasteful number, since it uses less digits than its factorization.

20187851082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25298090.

The product of its (nonzero) digits is 71680, while the sum is 42.

The spelling of 20187851082 in words is "twenty billion, one hundred eighty-seven million, eight hundred fifty-one thousand, eighty-two".