13078065421 has 16 divisors (see below), whose sum is σ = 13269600000. Its totient is φ = 12888465408.

The previous prime is 13078065409. The next prime is 13078065433. The reversal of 13078065421 is 12456087031.

It is an interprime number because it is at equal distance from previous prime (13078065409) and next prime (13078065433).

It is a cyclic number.

It is not a de Polignac number, because 13078065421 - 2¹³ = 13078057229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13078065401) 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, 10470205 + ... + 10471453.

It is an arithmetic number, because the mean of its divisors is an integer number (829350000).

Almost surely, 2^13078065421 is an apocalyptic number.

It is an amenable number.

13078065421 is a deficient number, since it is larger than the sum of its proper divisors (191534579).

13078065421 is a wasteful number, since it uses less digits than its factorization.

13078065421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 13078065421 in words is "thirteen billion, seventy-eight million, sixty-five thousand, four hundred twenty-one".