4661256563 has 4 divisors (see below), whose sum is σ = 4662293928. Its totient is φ = 4660219200.

The previous prime is 4661256533. The next prime is 4661256583. The reversal of 4661256563 is 3656521664.

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 4661256563 - 2⁶ = 4661256499 is a prime.

It is a super-2 number, since 2×4661256563² = 43454625492221145938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4661256533) 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, 511913 + ... + 520938.

It is an arithmetic number, because the mean of its divisors is an integer number (1165573482).

Almost surely, 2^4661256563 is an apocalyptic number.

4661256563 is a deficient number, since it is larger than the sum of its proper divisors (1037365).

4661256563 is a wasteful number, since it uses less digits than its factorization.

4661256563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037364.

The product of its digits is 777600, while the sum is 44.

The square root of 4661256563 is about 68273.3957189768. The cubic root of 4661256563 is about 1670.4532890503.

The spelling of 4661256563 in words is "four billion, six hundred sixty-one million, two hundred fifty-six thousand, five hundred sixty-three".