13520770678 has 4 divisors (see below), whose sum is σ = 20281156020. Its totient is φ = 6760385338.

The previous prime is 13520770657. The next prime is 13520770691. The reversal of 13520770678 is 87607702531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87607702531 = 487 ⋅179892613.

It is a super-2 number, since 2×13520770678² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3380192668 + ... + 3380192671.

It is an arithmetic number, because the mean of its divisors is an integer number (5070289005).

Almost surely, 2^13520770678 is an apocalyptic number.

13520770678 is a deficient number, since it is larger than the sum of its proper divisors (6760385342).

13520770678 is an equidigital number, since it uses as much as digits as its factorization.

13520770678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6760385341.

The product of its (nonzero) digits is 493920, while the sum is 46.

The spelling of 13520770678 in words is "thirteen billion, five hundred twenty million, seven hundred seventy thousand, six hundred seventy-eight".