20002851887 has 8 divisors (see below), whose sum is σ = 20270259072. Its totient is φ = 19736935000.

The previous prime is 20002851881. The next prime is 20002851889. The reversal of 20002851887 is 78815820002.

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

It is a cyclic number.

It is not a de Polignac number, because 20002851887 - 2¹⁰ = 20002850863 is a prime.

It is a super-2 number, since 2×20002851887² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002851881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345539 + ... + 399252.

It is an arithmetic number, because the mean of its divisors is an integer number (2533782384).

Almost surely, 2^20002851887 is an apocalyptic number.

20002851887 is a deficient number, since it is larger than the sum of its proper divisors (267407185).

20002851887 is a wasteful number, since it uses less digits than its factorization.

20002851887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745149.

The product of its (nonzero) digits is 71680, while the sum is 41.

The spelling of 20002851887 in words is "twenty billion, two million, eight hundred fifty-one thousand, eight hundred eighty-seven".