16158846551 has 4 divisors (see below), whose sum is σ = 16166658600. Its totient is φ = 16151034504.

The previous prime is 16158846493. The next prime is 16158846553. The reversal of 16158846551 is 15564885161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16158846551 - 2²² = 16154652247 is a prime.

It is a super-2 number, since 2×16158846551² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16158846551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16158846553) 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, 3902921 + ... + 3907058.

It is an arithmetic number, because the mean of its divisors is an integer number (4041664650).

Almost surely, 2^16158846551 is an apocalyptic number.

16158846551 is a deficient number, since it is larger than the sum of its proper divisors (7812049).

16158846551 is an equidigital number, since it uses as much as digits as its factorization.

16158846551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7812048.

The product of its digits is 1152000, while the sum is 50.

The spelling of 16158846551 in words is "sixteen billion, one hundred fifty-eight million, eight hundred forty-six thousand, five hundred fifty-one".