20154152617 has 8 divisors (see below), whose sum is σ = 20458120320. Its totient is φ = 19851907680.

The previous prime is 20154152567. The next prime is 20154152677. The reversal of 20154152617 is 71625145102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20154152617 - 2¹⁵ = 20154119849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20154152677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407109 + ... + 453922.

It is an arithmetic number, because the mean of its divisors is an integer number (2557265040).

Almost surely, 2^20154152617 is an apocalyptic number.

It is an amenable number.

20154152617 is a deficient number, since it is larger than the sum of its proper divisors (303967703).

20154152617 is an equidigital number, since it uses as much as digits as its factorization.

20154152617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861383.

The product of its (nonzero) digits is 16800, while the sum is 34.

Adding to 20154152617 its reverse (71625145102), we get a palindrome (91779297719).

The spelling of 20154152617 in words is "twenty billion, one hundred fifty-four million, one hundred fifty-two thousand, six hundred seventeen".