216125351639 has 8 divisors (see below), whose sum is σ = 224018151168. Its totient is φ = 208369818360.

The previous prime is 216125351579. The next prime is 216125351641. The reversal of 216125351639 is 936153521612.

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 216125351639 - 2²⁸ = 215856916183 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216125351639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216125351699) 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, 34313357 + ... + 34319654.

It is an arithmetic number, because the mean of its divisors is an integer number (28002268896).

Almost surely, 2^216125351639 is an apocalyptic number.

216125351639 is a deficient number, since it is larger than the sum of its proper divisors (7892799529).

216125351639 is an equidigital number, since it uses as much as digits as its factorization.

216125351639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68633125.

The product of its digits is 291600, while the sum is 44.

The spelling of 216125351639 in words is "two hundred sixteen billion, one hundred twenty-five million, three hundred fifty-one thousand, six hundred thirty-nine".