13161465040 has 40 divisors (see below), whose sum is σ = 30605639328. Its totient is φ = 5263685760.

The previous prime is 13161465029. The next prime is 13161465049. The reversal of 13161465040 is 4056416131.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 13161464993 and 13161465011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13161465049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 653359 + ... + 673201.

Almost surely, 2^13161465040 is an apocalyptic number.

13161465040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13161465040 is an abundant number, since it is smaller than the sum of its proper divisors (17444174288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13161465040 is a wasteful number, since it uses less digits than its factorization.

13161465040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28147 (or 28141 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 13161465040 in words is "thirteen billion, one hundred sixty-one million, four hundred sixty-five thousand, forty".