16212491651877 has 16 divisors (see below), whose sum is σ = 22087032764160. Its totient is φ = 10573356828672.

The previous prime is 16212491651869. The next prime is 16212491651879. The reversal of 16212491651877 is 77815619421261.

It is a happy number.

It is not a de Polignac number, because 16212491651877 - 2³ = 16212491651869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16212491651877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16212491651879) 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, 26910352 + ... + 27506217.

It is an arithmetic number, because the mean of its divisors is an integer number (1380439547760).

Almost surely, 2^{16212491651877} is an apocalyptic number.

It is an amenable number.

16212491651877 is a deficient number, since it is larger than the sum of its proper divisors (5874541112283).

16212491651877 is a wasteful number, since it uses less digits than its factorization.

16212491651877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54418732.

The product of its digits is 10160640, while the sum is 60.

The spelling of 16212491651877 in words is "sixteen trillion, two hundred twelve billion, four hundred ninety-one million, six hundred fifty-one thousand, eight hundred seventy-seven".