2216731887757 has 4 divisors (see below), whose sum is σ = 2217121957120. Its totient is φ = 2216341818396.

The previous prime is 2216731887743. The next prime is 2216731887761. The reversal of 2216731887757 is 7577881376122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2216731887757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216731887767) 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, 195026157 + ... + 195037522.

It is an arithmetic number, because the mean of its divisors is an integer number (554280489280).

Almost surely, 2^{2216731887757} is an apocalyptic number.

It is an amenable number.

2216731887757 is a deficient number, since it is larger than the sum of its proper divisors (390069363).

2216731887757 is an equidigital number, since it uses as much as digits as its factorization.

2216731887757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390069362.

The product of its digits is 55319040, while the sum is 64.

The spelling of 2216731887757 in words is "two trillion, two hundred sixteen billion, seven hundred thirty-one million, eight hundred eighty-seven thousand, seven hundred fifty-seven".