2216153778677 has 8 divisors (see below), whose sum is σ = 2360079443736. Its totient is φ = 2073735188992.

The previous prime is 2216153778661. The next prime is 2216153778719. The reversal of 2216153778677 is 7768773516122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1544735779876 + 671417998801 = 1242874^2 + 819401^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2216153778677 - 2⁴ = 2216153778661 is a prime.

It is a super-2 number, since 2×2216153778677² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216153778607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376765808 + ... + 376771689.

It is an arithmetic number, because the mean of its divisors is an integer number (295009930467).

Almost surely, 2^{2216153778677} is an apocalyptic number.

It is an amenable number.

2216153778677 is a deficient number, since it is larger than the sum of its proper divisors (143925665059).

2216153778677 is a wasteful number, since it uses less digits than its factorization.

2216153778677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753537687.

The product of its digits is 41489280, while the sum is 62.

The spelling of 2216153778677 in words is "two trillion, two hundred sixteen billion, one hundred fifty-three million, seven hundred seventy-eight thousand, six hundred seventy-seven".