992557817281 has 16 divisors (see below), whose sum is σ = 1008102723840. Its totient is φ = 977136361360.

The previous prime is 992557817267. The next prime is 992557817323. The reversal of 992557817281 is 182718755299.

992557817281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 992557817281 - 2¹¹ = 992557815233 is a prime.

It is a super-2 number, since 2×992557817281² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (992557817981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30072870 + ... + 30105856.

It is an arithmetic number, because the mean of its divisors is an integer number (63006420240).

Almost surely, 2^992557817281 is an apocalyptic number.

It is an amenable number.

992557817281 is a deficient number, since it is larger than the sum of its proper divisors (15544906559).

992557817281 is a wasteful number, since it uses less digits than its factorization.

992557817281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34844.

The product of its digits is 25401600, while the sum is 64.

The spelling of 992557817281 in words is "nine hundred ninety-two billion, five hundred fifty-seven million, eight hundred seventeen thousand, two hundred eighty-one".