1301061890881 has 9 divisors (see below), whose sum is σ = 1303508593569. Its totient is φ = 1298619778500.

The previous prime is 1301061890879. The next prime is 1301061890899. The reversal of 1301061890881 is 1880981601031.

The square root of 1301061890881 is 1140641.

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

It is not a de Polignac number, because 1301061890881 - 2¹ = 1301061890879 is a prime.

It is a super-2 number, since 2×1301061890881² (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 (1301061890801) 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, 1130374656 + ... + 1130375806.

Almost surely, 2^{1301061890881} is an apocalyptic number.

1301061890881 is the 1140641-st square number.

1301061890881 is the 570321-st centered octagonal number.

It is an amenable number.

1301061890881 is a deficient number, since it is larger than the sum of its proper divisors (2446702688).

1301061890881 is an frugal number, since it uses more digits than its factorization.

1301061890881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4284 (or 2142 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 46.

The spelling of 1301061890881 in words is "one trillion, three hundred one billion, sixty-one million, eight hundred ninety thousand, eight hundred eighty-one".