29477799481 has 27 divisors (see below), whose sum is σ = 32729815533. Its totient is φ = 26536560960.

The previous prime is 29477799457. The next prime is 29477799497. The reversal of 29477799481 is 18499777492.

The square root of 29477799481 is 171691.

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

It can be written as a sum of positive squares in 4 ways, for example, as 1292762025 + 28185037456 = 35955^2 + 167884^2 .

It is not a de Polignac number, because 29477799481 - 2²⁵ = 29444245049 is a prime.

It is a super-2 number, since 2×29477799481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29477799581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 104903061 + ... + 104903341.

Almost surely, 2^29477799481 is an apocalyptic number.

29477799481 is the 171691-st square number.

29477799481 is the 85846-th centered octagonal number.

It is an amenable number.

29477799481 is a deficient number, since it is larger than the sum of its proper divisors (3252016052).

29477799481 is an frugal number, since it uses more digits than its factorization.

29477799481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682 (or 341 counting only the distinct ones).

The product of its digits is 64012032, while the sum is 67.

The spelling of 29477799481 in words is "twenty-nine billion, four hundred seventy-seven million, seven hundred ninety-nine thousand, four hundred eighty-one".