20020135450 has 24 divisors (see below), whose sum is σ = 42557088672. Its totient is φ = 6864046320.

The previous prime is 20020135439. The next prime is 20020135519. The reversal of 20020135450 is 5453102002.

It is a super-3 number, since 3×20020135450³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28599844 + ... + 28600543.

It is an arithmetic number, because the mean of its divisors is an integer number (1773212028).

Almost surely, 2^20020135450 is an apocalyptic number.

20020135450 is an abundant number, since it is smaller than the sum of its proper divisors (22536953222).

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

20020135450 is a wasteful number, since it uses less digits than its factorization.

20020135450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57200406 (or 57200401 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

Adding to 20020135450 its reverse (5453102002), we get a palindrome (25473237452).

The spelling of 20020135450 in words is "twenty billion, twenty million, one hundred thirty-five thousand, four hundred fifty".