1980662980881 has 64 divisors (see below), whose sum is σ = 2914339291136. Its totient is φ = 1189121472000.

The previous prime is 1980662980837. The next prime is 1980662980903. The reversal of 1980662980881 is 1880892660891.

It is a happy number.

It is not a de Polignac number, because 1980662980881 - 2¹³ = 1980662972689 is a prime.

It is a super-2 number, since 2×1980662980881² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1980662980801) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 199437486 + ... + 199447416.

It is an arithmetic number, because the mean of its divisors is an integer number (45536551424).

Almost surely, 2^{1980662980881} is an apocalyptic number.

It is an amenable number.

1980662980881 is a deficient number, since it is larger than the sum of its proper divisors (933676310255).

1980662980881 is a wasteful number, since it uses less digits than its factorization.

1980662980881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10742.

The product of its (nonzero) digits is 23887872, while the sum is 66.

The spelling of 1980662980881 in words is "one trillion, nine hundred eighty billion, six hundred sixty-two million, nine hundred eighty thousand, eight hundred eighty-one".