2151717566272 has 28 divisors (see below), whose sum is σ = 4455458659296. Its totient is φ = 1029082313600.

The previous prime is 2151717566267. The next prime is 2151717566363. The reversal of 2151717566272 is 2726657171512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 730880854 + ... + 730883797.

Almost surely, 2^{2151717566272} is an apocalyptic number.

It is an amenable number.

2151717566272 is an abundant number, since it is smaller than the sum of its proper divisors (2303741093024).

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

2151717566272 is a wasteful number, since it uses less digits than its factorization.

2151717566272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461764686 (or 1461764676 counting only the distinct ones).

The product of its digits is 2469600, while the sum is 52.

The spelling of 2151717566272 in words is "two trillion, one hundred fifty-one billion, seven hundred seventeen million, five hundred sixty-six thousand, two hundred seventy-two".