13420646305 has 16 divisors (see below), whose sum is σ = 17615974464. Its totient is φ = 9734287680.

The previous prime is 13420646299. The next prime is 13420646347. The reversal of 13420646305 is 50364602431.

It is not a de Polignac number, because 13420646305 - 2²¹ = 13418549153 is a prime.

It is a super-2 number, since 2×13420646305² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306579 + ... + 347608.

It is an arithmetic number, because the mean of its divisors is an integer number (1100998404).

Almost surely, 2^13420646305 is an apocalyptic number.

It is an amenable number.

13420646305 is a deficient number, since it is larger than the sum of its proper divisors (4195328159).

13420646305 is a wasteful number, since it uses less digits than its factorization.

13420646305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654576.

The product of its (nonzero) digits is 51840, while the sum is 34.

The spelling of 13420646305 in words is "thirteen billion, four hundred twenty million, six hundred forty-six thousand, three hundred five".