2013251669881 has 9 divisors (see below), whose sum is σ = 2048038094991. Its totient is φ = 1979046464544.

The previous prime is 2013251669879. The next prime is 2013251669939. The reversal of 2013251669881 is 1889661523102.

It is a happy number.

The square root of 2013251669881 is 1418891.

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., 988216916281 + 1025034753600 = 994091^2 + 1012440^2 .

It is not a de Polignac number, because 2013251669881 - 2¹ = 2013251669879 is a prime.

It is a super-2 number, since 2×2013251669881² (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 (2013251669801) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 83702545 + ... + 83726593.

Almost surely, 2^{2013251669881} is an apocalyptic number.

2013251669881 is the 1418891-st square number.

2013251669881 is the 709446-th centered octagonal number.

It is an amenable number.

2013251669881 is a deficient number, since it is larger than the sum of its proper divisors (34786425110).

2013251669881 is an frugal number, since it uses more digits than its factorization.

2013251669881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48216 (or 24108 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 52.

The spelling of 2013251669881 in words is "two trillion, thirteen billion, two hundred fifty-one million, six hundred sixty-nine thousand, eight hundred eighty-one".