20135233051 has 4 divisors (see below), whose sum is σ = 20138116104. Its totient is φ = 20132350000.

The previous prime is 20135233003. The next prime is 20135233061. The reversal of 20135233051 is 15033253102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20135233051 - 2²¹ = 20133135899 is a prime.

It is a super-2 number, since 2×20135233051² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20135233061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1431025 + ... + 1445026.

It is an arithmetic number, because the mean of its divisors is an integer number (5034529026).

Almost surely, 2^20135233051 is an apocalyptic number.

20135233051 is a deficient number, since it is larger than the sum of its proper divisors (2883053).

20135233051 is an equidigital number, since it uses as much as digits as its factorization.

20135233051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2883052.

The product of its (nonzero) digits is 2700, while the sum is 25.

Adding to 20135233051 its reverse (15033253102), we get a palindrome (35168486153).

The spelling of 20135233051 in words is "twenty billion, one hundred thirty-five million, two hundred thirty-three thousand, fifty-one".