13661130451544 has 8 divisors (see below), whose sum is σ = 25614619596660. Its totient is φ = 6830565225768.

The previous prime is 13661130451517. The next prime is 13661130451583. The reversal of 13661130451544 is 44515403116631.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 13661130451495 and 13661130451504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 853820653214 + ... + 853820653229.

Almost surely, 2^{13661130451544} is an apocalyptic number.

It is an amenable number.

13661130451544 is a deficient number, since it is larger than the sum of its proper divisors (11953489145116).

13661130451544 is a wasteful number, since it uses less digits than its factorization.

13661130451544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707641306449 (or 1707641306445 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 13661130451544 in words is "thirteen trillion, six hundred sixty-one billion, one hundred thirty million, four hundred fifty-one thousand, five hundred forty-four".