15200220617 has 4 divisors (see below), whose sum is σ = 15240327120. Its totient is φ = 15160114116.

The previous prime is 15200220613. The next prime is 15200220653. The reversal of 15200220617 is 71602200251.

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: 71602200251 = 1493 ⋅47958607.

It is a cyclic number.

It is not a de Polignac number, because 15200220617 - 2² = 15200220613 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15200220613) 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, 20052683 + ... + 20053440.

It is an arithmetic number, because the mean of its divisors is an integer number (3810081780).

Almost surely, 2^15200220617 is an apocalyptic number.

It is an amenable number.

15200220617 is a deficient number, since it is larger than the sum of its proper divisors (40106503).

15200220617 is an equidigital number, since it uses as much as digits as its factorization.

15200220617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40106502.

The product of its (nonzero) digits is 1680, while the sum is 26.

Adding to 15200220617 its reverse (71602200251), we get a palindrome (86802420868).

The spelling of 15200220617 in words is "fifteen billion, two hundred million, two hundred twenty thousand, six hundred seventeen".