20152053109 has 2 divisors, whose sum is σ = 20152053110. Its totient is φ = 20152053108.

The previous prime is 20152053013. The next prime is 20152053121. The reversal of 20152053109 is 90135025102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11710486225 + 8441566884 = 108215^2 + 91878^2 .

It is a cyclic number.

It is not a de Polignac number, because 20152053109 - 2²⁷ = 20017835381 is a prime.

It is a super-2 number, since 2×20152053109² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20152053139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10076026554 + 10076026555.

It is an arithmetic number, because the mean of its divisors is an integer number (10076026555).

Almost surely, 2^20152053109 is an apocalyptic number.

It is an amenable number.

20152053109 is a deficient number, since it is larger than the sum of its proper divisors (1).

20152053109 is an equidigital number, since it uses as much as digits as its factorization.

20152053109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 28.

The spelling of 20152053109 in words is "twenty billion, one hundred fifty-two million, fifty-three thousand, one hundred nine".