20020135455 has 12 divisors (see below), whose sum is σ = 34701568200. Its totient is φ = 10677405552.

The previous prime is 20020135439. The next prime is 20020135519. The reversal of 20020135455 is 55453102002.

It is a happy number.

20020135455 is a `hidden beast` number, since 2 + 0 + 0 + 201 + 3 + 5 + 455 = 666.

It is not a de Polignac number, because 20020135455 - 2⁴ = 20020135439 is a prime.

It is a congruent number.

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, 222445905 + ... + 222445994.

It is an arithmetic number, because the mean of its divisors is an integer number (2891797350).

Almost surely, 2^20020135455 is an apocalyptic number.

20020135455 is a deficient number, since it is larger than the sum of its proper divisors (14681432745).

20020135455 is a wasteful number, since it uses less digits than its factorization.

20020135455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444891910 (or 444891907 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 20020135455 its reverse (55453102002), we get a palindrome (75473237457).

The spelling of 20020135455 in words is "twenty billion, twenty million, one hundred thirty-five thousand, four hundred fifty-five".