216740967126 has 16 divisors (see below), whose sum is σ = 440829086400. Its totient is φ = 71022463688.

The previous prime is 216740967109. The next prime is 216740967139. The reversal of 216740967126 is 621769047612.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306130956 + ... + 306131663.

It is an arithmetic number, because the mean of its divisors is an integer number (27551817900).

Almost surely, 2^216740967126 is an apocalyptic number.

216740967126 is an abundant number, since it is smaller than the sum of its proper divisors (224088119274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216740967126 is a wasteful number, since it uses less digits than its factorization.

216740967126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612262683.

The product of its (nonzero) digits is 1524096, while the sum is 51.

The spelling of 216740967126 in words is "two hundred sixteen billion, seven hundred forty million, nine hundred sixty-seven thousand, one hundred twenty-six".