13761401481 has 9 divisors (see below), whose sum is σ = 19878088269. Its totient is φ = 9174033036.

The previous prime is 13761401473. The next prime is 13761401501. The reversal of 13761401481 is 18410416731.

The square root of 13761401481 is 117309.

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

13761401481 is a `hidden beast` number, since 1 + 37 + 6 + 140 + 1 + 481 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 13761401481 - 2³ = 13761401473 is a prime.

It is a super-3 number, since 3×13761401481³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (13761406481) 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, 332376 + ... + 371478.

Almost surely, 2^13761401481 is an apocalyptic number.

13761401481 is the 117309-th square number.

13761401481 is the 58655-th centered octagonal number.

It is an amenable number.

13761401481 is a deficient number, since it is larger than the sum of its proper divisors (6116686788).

13761401481 is an frugal number, since it uses more digits than its factorization.

13761401481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78212 (or 39106 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

Multiplying 13761401481 by its sum of digits (36), we get a square (495410453316 = 703854²).

The spelling of 13761401481 in words is "thirteen billion, seven hundred sixty-one million, four hundred one thousand, four hundred eighty-one".