809377481563 has 12 divisors (see below), whose sum is σ = 941538654000. Its totient is φ = 693738930192.

The previous prime is 809377481489. The next prime is 809377481587. The reversal of 809377481563 is 365184773908.

809377481563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 809377481563 - 2⁹ = 809377481051 is a prime.

It is a super-2 number, since 2×809377481563² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (809377481063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3146970 + ... + 3394432.

It is an arithmetic number, because the mean of its divisors is an integer number (78461554500).

Almost surely, 2^809377481563 is an apocalyptic number.

809377481563 is a deficient number, since it is larger than the sum of its proper divisors (132161172437).

809377481563 is a wasteful number, since it uses less digits than its factorization.

809377481563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314226 (or 314219 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 61.

It can be divided in two parts, 80937 and 7481563, that added together give a square (7562500 = 2750²).

The spelling of 809377481563 in words is "eight hundred nine billion, three hundred seventy-seven million, four hundred eighty-one thousand, five hundred sixty-three".