111451518492481 has 8 divisors (see below), whose sum is σ = 115056203480064. Its totient is φ = 107847425674560.

The previous prime is 111451518492473. The next prime is 111451518492497. The reversal of 111451518492481 is 184294815154111.

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 111451518492481 - 2³ = 111451518492473 is a prime.

It is a super-4 number, since 4×111451518492481⁴ (a number of 57 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111451518492401) 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, 147659896 + ... + 148412761.

It is an arithmetic number, because the mean of its divisors is an integer number (14382025435008).

Almost surely, 2^{111451518492481} is an apocalyptic number.

It is an amenable number.

111451518492481 is a deficient number, since it is larger than the sum of its proper divisors (3604684987583).

111451518492481 is a wasteful number, since it uses less digits than its factorization.

111451518492481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296084831.

The product of its digits is 1843200, while the sum is 55.

The spelling of 111451518492481 in words is "one hundred eleven trillion, four hundred fifty-one billion, five hundred eighteen million, four hundred ninety-two thousand, four hundred eighty-one".