2198716528391 has 8 divisors (see below), whose sum is σ = 2199379219968. Its totient is φ = 2198053935000.

The previous prime is 2198716528381. The next prime is 2198716528397. The reversal of 2198716528391 is 1938256178912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2198716528391 is a prime.

It is a super-2 number, since 2×2198716528391² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2198716528397) 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, 76780646 + ... + 76809276.

It is an arithmetic number, because the mean of its divisors is an integer number (274922402496).

Almost surely, 2^{2198716528391} is an apocalyptic number.

2198716528391 is a deficient number, since it is larger than the sum of its proper divisors (662691577).

2198716528391 is a wasteful number, since it uses less digits than its factorization.

2198716528391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49093.

The product of its digits is 13063680, while the sum is 62.

The spelling of 2198716528391 in words is "two trillion, one hundred ninety-eight billion, seven hundred sixteen million, five hundred twenty-eight thousand, three hundred ninety-one".