13471040723661 has 6 divisors (see below), whose sum is σ = 19458169934190. Its totient is φ = 8980693815768.

The previous prime is 13471040723563. The next prime is 13471040723681. The reversal of 13471040723661 is 16632704017431.

13471040723661 is a `hidden beast` number, since 1 + 3 + 4 + 7 + 1 + 0 + 407 + 236 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11942588198025 + 1528452525636 = 3455805^2 + 1236306^2 .

It is not a de Polignac number, because 13471040723661 - 2⁷ = 13471040723533 is a prime.

It is a super-3 number, since 3×13471040723661³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13471040723681) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 748391151306 + ... + 748391151323.

It is an arithmetic number, because the mean of its divisors is an integer number (3243028322365).

Almost surely, 2^{13471040723661} is an apocalyptic number.

It is an amenable number.

13471040723661 is a deficient number, since it is larger than the sum of its proper divisors (5987129210529).

13471040723661 is a wasteful number, since it uses less digits than its factorization.

13471040723661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496782302635 (or 1496782302632 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The spelling of 13471040723661 in words is "thirteen trillion, four hundred seventy-one billion, forty million, seven hundred twenty-three thousand, six hundred sixty-one".