20287683135 has 24 divisors (see below), whose sum is σ = 35175014160. Its totient is φ = 10817114112.

The previous prime is 20287683131. The next prime is 20287683161. The reversal of 20287683135 is 53138678202.

It is not a de Polignac number, because 20287683135 - 2² = 20287683131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20287683131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107967 + ... + 228543.

It is an arithmetic number, because the mean of its divisors is an integer number (1465625590).

Almost surely, 2^20287683135 is an apocalyptic number.

20287683135 is a deficient number, since it is larger than the sum of its proper divisors (14887331025).

20287683135 is a wasteful number, since it uses less digits than its factorization.

20287683135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124327 (or 124324 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 20287683135 in words is "twenty billion, two hundred eighty-seven million, six hundred eighty-three thousand, one hundred thirty-five".