16442670124477 has 4 divisors (see below), whose sum is σ = 16443931368636. Its totient is φ = 16441408880320.

The previous prime is 16442670124471. The next prime is 16442670124537. The reversal of 16442670124477 is 77442107624461.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8250647291236 + 8192022833241 = 2872394^2 + 2862171^2 .

It is a cyclic number.

It is not a de Polignac number, because 16442670124477 - 2²³ = 16442661735869 is a prime.

It is a super-3 number, since 3×16442670124477³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16442670124471) 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, 630602524 + ... + 630628597.

It is an arithmetic number, because the mean of its divisors is an integer number (4110982842159).

Almost surely, 2^{16442670124477} is an apocalyptic number.

It is an amenable number.

16442670124477 is a deficient number, since it is larger than the sum of its proper divisors (1261244159).

16442670124477 is a wasteful number, since it uses less digits than its factorization.

16442670124477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261244158.

The product of its (nonzero) digits is 12644352, while the sum is 55.

The spelling of 16442670124477 in words is "sixteen trillion, four hundred forty-two billion, six hundred seventy million, one hundred twenty-four thousand, four hundred seventy-seven".