10945972129 has 3 divisors (see below), whose sum is σ = 10946076753. Its totient is φ = 10945867506.

The previous prime is 10945972127. The next prime is 10945972183. The reversal of 10945972129 is 92127954901.

The square root of 10945972129 is 104623.

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, and also an emirpimes, since its reverse is a distinct semiprime: 92127954901 = 67 ⋅1375044103.

It is not a de Polignac number, because 10945972129 - 2¹ = 10945972127 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10945972127) 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, 52312 + ... + 156934.

It is an arithmetic number, because the mean of its divisors is an integer number (3648692251).

Almost surely, 2^10945972129 is an apocalyptic number.

10945972129 is the 104623-rd square number.

10945972129 is the 52312-nd centered octagonal number.

It is an amenable number.

10945972129 is a deficient number, since it is larger than the sum of its proper divisors (104624).

10945972129 is an frugal number, since it uses more digits than its factorization.

10945972129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209246 (or 104623 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 49.

Multiplying 10945972129 by its sum of digits (49), we get a square (536352634321 = 732361²).

The spelling of 10945972129 in words is "ten billion, nine hundred forty-five million, nine hundred seventy-two thousand, one hundred twenty-nine".