16151211617 has 4 divisors (see below), whose sum is σ = 16195220736. Its totient is φ = 16107202500.

The previous prime is 16151211589. The next prime is 16151211653. The reversal of 16151211617 is 71611215161.

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.

It is a cyclic number.

It is not a de Polignac number, because 16151211617 - 2¹² = 16151207521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16151211677) 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, 22004009 + ... + 22004742.

It is an arithmetic number, because the mean of its divisors is an integer number (4048805184).

Almost surely, 2^16151211617 is an apocalyptic number.

It is an amenable number.

16151211617 is a deficient number, since it is larger than the sum of its proper divisors (44009119).

16151211617 is an equidigital number, since it uses as much as digits as its factorization.

16151211617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44009118.

The product of its digits is 2520, while the sum is 32.

Adding to 16151211617 its reverse (71611215161), we get a palindrome (87762426778).

The spelling of 16151211617 in words is "sixteen billion, one hundred fifty-one million, two hundred eleven thousand, six hundred seventeen".