29152489081 has 3 divisors (see below), whose sum is σ = 29152659823. Its totient is φ = 29152318340.

The previous prime is 29152489057. The next prime is 29152489123. The reversal of 29152489081 is 18098425192.

The square root of 29152489081 is 170741.

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 can be written as a sum of positive squares in only one way, i.e., 2092239081 + 27060250000 = 45741^2 + 164500^2 .

It is not a de Polignac number, because 29152489081 - 2¹¹ = 29152487033 is a prime.

It is a super-2 number, since 2×29152489081² (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 (29152489021) 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, 85371 + ... + 256111.

Almost surely, 2^29152489081 is an apocalyptic number.

29152489081 is the 170741-st square number.

29152489081 is the 85371-st centered octagonal number.

It is an amenable number.

29152489081 is a deficient number, since it is larger than the sum of its proper divisors (170742).

29152489081 is an frugal number, since it uses more digits than its factorization.

29152489081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341482 (or 170741 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 49.

Multiplying 29152489081 by its sum of digits (49), we get a square (1428471964969 = 1195187²).

The spelling of 29152489081 in words is "twenty-nine billion, one hundred fifty-two million, four hundred eighty-nine thousand, eighty-one".