14991798481 has 9 divisors (see below), whose sum is σ = 16480068969. Its totient is φ = 13627683300.

The previous prime is 14991798469. The next prime is 14991798487. The reversal of 14991798481 is 18489719941.

The square root of 14991798481 is 122441.

It is a perfect power (a square), and thus also a powerful number.

It is a de Polignac number, because none of the positive numbers 2^k-14991798481 is a prime.

It is a super-3 number, since 3×14991798481³ (a number of 32 digits) contains 333 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 (14991798487) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1341286 + ... + 1352416.

Almost surely, 2^14991798481 is an apocalyptic number.

14991798481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

14991798481 is the 122441-st square number.

14991798481 is the 61221-st centered octagonal number.

It is an amenable number.

14991798481 is a deficient number, since it is larger than the sum of its proper divisors (1488270488).

14991798481 is an frugal number, since it uses more digits than its factorization.

14991798481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22284 (or 11142 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 61.

The spelling of 14991798481 in words is "fourteen billion, nine hundred ninety-one million, seven hundred ninety-eight thousand, four hundred eighty-one".