2029601978881 has 9 divisors (see below), whose sum is σ = 2040137210241. Its totient is φ = 2019120895044.

The previous prime is 2029601978837. The next prime is 2029601978927. The reversal of 2029601978881 is 1888791069202.

The square root of 2029601978881 is 1424641.

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

It is a de Polignac number, because none of the positive numbers 2^k-2029601978881 is a prime.

It is a super-2 number, since 2×2029601978881² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2029601978821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 283499980 + ... + 283507138.

It is an arithmetic number, because the mean of its divisors is an integer number (226681912249).

Almost surely, 2^{2029601978881} is an apocalyptic number.

2029601978881 is the 1424641-st square number.

2029601978881 is the 712321-st centered octagonal number.

It is an amenable number.

2029601978881 is a deficient number, since it is larger than the sum of its proper divisors (10535231360).

2029601978881 is an frugal number, since it uses more digits than its factorization.

2029601978881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14716 (or 7358 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 61.

The spelling of 2029601978881 in words is "two trillion, twenty-nine billion, six hundred one million, nine hundred seventy-eight thousand, eight hundred eighty-one".