29801681522 has 6 divisors (see below), whose sum is σ = 44702888493. Its totient is φ = 14900718692.

The previous prime is 29801681501. The next prime is 29801681551. The reversal of 29801681522 is 22518610892.

It can be written as a sum of positive squares in 2 ways, for example, as 18837288001 + 10964393521 = 137249^2 + 104711^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=122069.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 183104 + ... + 305172.

Almost surely, 2^29801681522 is an apocalyptic number.

29801681522 is a deficient number, since it is larger than the sum of its proper divisors (14901206971).

29801681522 is an frugal number, since it uses more digits than its factorization.

29801681522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244140 (or 122071 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 44.

The spelling of 29801681522 in words is "twenty-nine billion, eight hundred one million, six hundred eighty-one thousand, five hundred twenty-two".