16561466151 has 16 divisors (see below), whose sum is σ = 22131446400. Its totient is φ = 11016257760.

The previous prime is 16561466123. The next prime is 16561466179. The reversal of 16561466151 is 15166416561.

It is an interprime number because it is at equal distance from previous prime (16561466123) and next prime (16561466179).

It is not a de Polignac number, because 16561466151 - 2⁹ = 16561465639 is a prime.

It is a super-2 number, since 2×16561466151² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16561461151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5204781 + ... + 5207961.

It is an arithmetic number, because the mean of its divisors is an integer number (1383215400).

Almost surely, 2^16561466151 is an apocalyptic number.

16561466151 is a deficient number, since it is larger than the sum of its proper divisors (5569980249).

16561466151 is a wasteful number, since it uses less digits than its factorization.

16561466151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6526.

The product of its digits is 129600, while the sum is 42.

The spelling of 16561466151 in words is "sixteen billion, five hundred sixty-one million, four hundred sixty-six thousand, one hundred fifty-one".