216697091533141 has 4 divisors (see below), whose sum is σ = 216699912488800. Its totient is φ = 216694270577484.

The previous prime is 216697091533103. The next prime is 216697091533157. The reversal of 216697091533141 is 141335190796612.

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 not a de Polignac number, because 216697091533141 - 2²³ = 216697083144533 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 (216697091533171) 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, 1410362601 + ... + 1410516238.

It is an arithmetic number, because the mean of its divisors is an integer number (54174978122200).

Almost surely, 2^{216697091533141} is an apocalyptic number.

It is an amenable number.

216697091533141 is a deficient number, since it is larger than the sum of its proper divisors (2820955659).

216697091533141 is an equidigital number, since it uses as much as digits as its factorization.

216697091533141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2820955658.

The product of its (nonzero) digits is 7348320, while the sum is 58.

The spelling of 216697091533141 in words is "two hundred sixteen trillion, six hundred ninety-seven billion, ninety-one million, five hundred thirty-three thousand, one hundred forty-one".