8401636545 has 16 divisors (see below), whose sum is σ = 13906157760. Its totient is φ = 4326359744.

The previous prime is 8401636541. The next prime is 8401636577. The reversal of 8401636545 is 5456361048.

8401636545 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 8401636545 - 2² = 8401636541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8401636497 and 8401636506.

It is not an unprimeable number, because it can be changed into a prime (8401636541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9656619 + ... + 9657488.

It is an arithmetic number, because the mean of its divisors is an integer number (869134860).

Almost surely, 2^8401636545 is an apocalyptic number.

It is an amenable number.

8401636545 is a deficient number, since it is larger than the sum of its proper divisors (5504521215).

8401636545 is a wasteful number, since it uses less digits than its factorization.

8401636545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19314144.

The product of its (nonzero) digits is 345600, while the sum is 42.

The square root of 8401636545 is about 91660.4415492310. The cubic root of 8401636545 is about 2032.9247192141.

The spelling of 8401636545 in words is "eight billion, four hundred one million, six hundred thirty-six thousand, five hundred forty-five".