2036640097881 has 27 divisors (see below), whose sum is σ = 3104918843871. Its totient is φ = 1286247633264.

The previous prime is 2036640097783. The next prime is 2036640097907. The reversal of 2036640097881 is 1887900466302.

The square root of 2036640097881 is 1427109.

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

It can be written as a sum of positive squares in only one way, i.e., 1005838497225 + 1030801600656 = 1002915^2 + 1015284^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2036640097881 is a prime.

It is a super-2 number, since 2×2036640097881² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2036640027881) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 81332695 + ... + 81357731.

Almost surely, 2^{2036640097881} is an apocalyptic number.

2036640097881 is the 1427109-th square number.

2036640097881 is the 713555-th centered octagonal number.

It is an amenable number.

2036640097881 is a deficient number, since it is larger than the sum of its proper divisors (1068278745990).

2036640097881 is an frugal number, since it uses more digits than its factorization.

2036640097881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50118 (or 25059 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 2036640097881 in words is "two trillion, thirty-six billion, six hundred forty million, ninety-seven thousand, eight hundred eighty-one".