13620512747 has 2 divisors, whose sum is σ = 13620512748. Its totient is φ = 13620512746.

The previous prime is 13620512699. The next prime is 13620512777. The reversal of 13620512747 is 74721502631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13620512747 - 2⁸ = 13620512491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13620512747.

It is not a weakly prime, because it can be changed into another prime (13620512777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6810256373 + 6810256374.

It is an arithmetic number, because the mean of its divisors is an integer number (6810256374).

Almost surely, 2^13620512747 is an apocalyptic number.

13620512747 is a deficient number, since it is larger than the sum of its proper divisors (1).

13620512747 is an equidigital number, since it uses as much as digits as its factorization.

13620512747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 38.

The spelling of 13620512747 in words is "thirteen billion, six hundred twenty million, five hundred twelve thousand, seven hundred forty-seven".