13521373739 has 2 divisors, whose sum is σ = 13521373740. Its totient is φ = 13521373738.

The previous prime is 13521373729. The next prime is 13521373763. The reversal of 13521373739 is 93737312531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13521373739 - 2¹² = 13521369643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13521373739.

It is not a weakly prime, because it can be changed into another prime (13521373709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6760686869 + 6760686870.

It is an arithmetic number, because the mean of its divisors is an integer number (6760686870).

Almost surely, 2^13521373739 is an apocalyptic number.

13521373739 is a deficient number, since it is larger than the sum of its proper divisors (1).

13521373739 is an equidigital number, since it uses as much as digits as its factorization.

13521373739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 357210, while the sum is 44.

The spelling of 13521373739 in words is "thirteen billion, five hundred twenty-one million, three hundred seventy-three thousand, seven hundred thirty-nine".