13154631644461 has 16 divisors (see below), whose sum is σ = 13916480400000. Its totient is φ = 12399887517696.

The previous prime is 13154631644459. The next prime is 13154631644467. The reversal of 13154631644461 is 16444613645131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13154631644461 - 2¹ = 13154631644459 is a prime.

It is a super-2 number, since 2×13154631644461² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13154631644467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 915025 + ... + 5210233.

It is an arithmetic number, because the mean of its divisors is an integer number (869780025000).

Almost surely, 2^{13154631644461} is an apocalyptic number.

It is an amenable number.

13154631644461 is a deficient number, since it is larger than the sum of its proper divisors (761848755539).

13154631644461 is a wasteful number, since it uses less digits than its factorization.

13154631644461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4296036.

The product of its digits is 2488320, while the sum is 49.

The spelling of 13154631644461 in words is "thirteen trillion, one hundred fifty-four billion, six hundred thirty-one million, six hundred forty-four thousand, four hundred sixty-one".