29788355852641 has 3 divisors (see below), whose sum is σ = 29788361310513. Its totient is φ = 29788350394770.

The previous prime is 29788355852623. The next prime is 29788355852707. The reversal of 29788355852641 is 14625855388792.

The square root of 29788355852641 is 5457871.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 29788355852641 - 2¹³ = 29788355844449 is a prime.

It is a super-2 number, since 2×29788355852641² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29788355852621) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2728936 + ... + 8186806.

It is an arithmetic number, because the mean of its divisors is an integer number (9929453770171).

Almost surely, 2^{29788355852641} is an apocalyptic number.

29788355852641 is the 5457871-st square number.

29788355852641 is the 2728936-th centered octagonal number.

It is an amenable number.

29788355852641 is a deficient number, since it is larger than the sum of its proper divisors (5457872).

29788355852641 is an frugal number, since it uses more digits than its factorization.

29788355852641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10915742 (or 5457871 counting only the distinct ones).

The product of its digits is 1161216000, while the sum is 73.

The spelling of 29788355852641 in words is "twenty-nine trillion, seven hundred eighty-eight billion, three hundred fifty-five million, eight hundred fifty-two thousand, six hundred forty-one".