2216742958731 has 12 divisors (see below), whose sum is σ = 3438213568872. Its totient is φ = 1266710262048.

The previous prime is 2216742958673. The next prime is 2216742958751. The reversal of 2216742958731 is 1378592476122.

It is not a de Polignac number, because 2216742958731 - 2⁷ = 2216742958603 is a prime.

It is a super-2 number, since 2×2216742958731² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2216742958751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7539941890 + ... + 7539942183.

It is an arithmetic number, because the mean of its divisors is an integer number (286517797406).

Almost surely, 2^{2216742958731} is an apocalyptic number.

2216742958731 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2216742958731 is a deficient number, since it is larger than the sum of its proper divisors (1221470610141).

2216742958731 is a wasteful number, since it uses less digits than its factorization.

2216742958731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15079884090 (or 15079884083 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 57.

The spelling of 2216742958731 in words is "two trillion, two hundred sixteen billion, seven hundred forty-two million, nine hundred fifty-eight thousand, seven hundred thirty-one".