13649515801 has 2 divisors, whose sum is σ = 13649515802. Its totient is φ = 13649515800.

The previous prime is 13649515783. The next prime is 13649515823. The reversal of 13649515801 is 10851594631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11508140176 + 2141375625 = 107276^2 + 46275^2 .

It is a cyclic number.

It is not a de Polignac number, because 13649515801 - 2¹³ = 13649507609 is a prime.

It is not a weakly prime, because it can be changed into another prime (13649015801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6824757900 + 6824757901.

It is an arithmetic number, because the mean of its divisors is an integer number (6824757901).

Almost surely, 2^13649515801 is an apocalyptic number.

It is an amenable number.

13649515801 is a deficient number, since it is larger than the sum of its proper divisors (1).

13649515801 is an equidigital number, since it uses as much as digits as its factorization.

13649515801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 43.

The spelling of 13649515801 in words is "thirteen billion, six hundred forty-nine million, five hundred fifteen thousand, eight hundred one".