8461628840563 has 4 divisors (see below), whose sum is σ = 8753409145440. Its totient is φ = 8169848535688.

The previous prime is 8461628840551. The next prime is 8461628840569. The reversal of 8461628840563 is 3650488261648.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8461628840563 - 2¹⁷ = 8461628709491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8461628840569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145890152395 + ... + 145890152452.

It is an arithmetic number, because the mean of its divisors is an integer number (2188352286360).

Almost surely, 2^{8461628840563} is an apocalyptic number.

8461628840563 is a deficient number, since it is larger than the sum of its proper divisors (291780304877).

8461628840563 is a wasteful number, since it uses less digits than its factorization.

8461628840563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291780304876.

The product of its (nonzero) digits is 53084160, while the sum is 61.

The spelling of 8461628840563 in words is "eight trillion, four hundred sixty-one billion, six hundred twenty-eight million, eight hundred forty thousand, five hundred sixty-three".