20612152153 has 4 divisors (see below), whose sum is σ = 20674424848. Its totient is φ = 20549879460.

The previous prime is 20612152139. The next prime is 20612152159. The reversal of 20612152153 is 35125121602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35125121602 = 2 ⋅17562560801.

It is a cyclic number.

It is not a de Polignac number, because 20612152153 - 2⁹ = 20612151641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20612152159) 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, 31135851 + ... + 31136512.

It is an arithmetic number, because the mean of its divisors is an integer number (5168606212).

Almost surely, 2^20612152153 is an apocalyptic number.

It is an amenable number.

20612152153 is a deficient number, since it is larger than the sum of its proper divisors (62272695).

20612152153 is an equidigital number, since it uses as much as digits as its factorization.

20612152153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62272694.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 20612152153 its reverse (35125121602), we get a palindrome (55737273755).

The spelling of 20612152153 in words is "twenty billion, six hundred twelve million, one hundred fifty-two thousand, one hundred fifty-three".