20153151613 has 4 divisors (see below), whose sum is σ = 23032173280. Its totient is φ = 17274129948.

The previous prime is 20153151587. The next prime is 20153151617. The reversal of 20153151613 is 31615135102.

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: 31615135102 = 2 ⋅15807567551.

It is a cyclic number.

It is not a de Polignac number, because 20153151613 - 2¹⁷ = 20153020541 is a prime.

It is a super-2 number, since 2×20153151613² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20153151617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1439510823 + ... + 1439510836.

It is an arithmetic number, because the mean of its divisors is an integer number (5758043320).

Almost surely, 2^20153151613 is an apocalyptic number.

It is an amenable number.

20153151613 is a deficient number, since it is larger than the sum of its proper divisors (2879021667).

20153151613 is an equidigital number, since it uses as much as digits as its factorization.

20153151613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2879021666.

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

Adding to 20153151613 its reverse (31615135102), we get a palindrome (51768286715).

The spelling of 20153151613 in words is "twenty billion, one hundred fifty-three million, one hundred fifty-one thousand, six hundred thirteen".