486619251561 has 15 divisors (see below), whose sum is σ = 726934433511. Its totient is φ = 324408648888.

The previous prime is 486619251523. The next prime is 486619251563. The reversal of 486619251561 is 165152916684.

It is a happy number.

The square root of 486619251561 is 697581.

It is a perfect power (a square), and thus also a powerful number.

486619251561 is a `hidden beast` number, since 4 + 8 + 6 + 61 + 9 + 2 + 515 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 480985247961 + 5634003600 = 693531^2 + 75060^2 .

It is not a de Polignac number, because 486619251561 - 2²⁷ = 486485033833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 486619251498 and 486619251507.

It is not an unprimeable number, because it can be changed into a prime (486619251563) 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 14 ways as a sum of consecutive naturals, for example, 6239475 + ... + 6316983.

Almost surely, 2^486619251561 is an apocalyptic number.

486619251561 is the 697581-st square number.

486619251561 is the 348791-st centered octagonal number.

It is an amenable number.

486619251561 is a deficient number, since it is larger than the sum of its proper divisors (240315181950).

486619251561 is an frugal number, since it uses more digits than its factorization.

486619251561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155030 (or 77512 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 54.

The spelling of 486619251561 in words is "four hundred eighty-six billion, six hundred nineteen million, two hundred fifty-one thousand, five hundred sixty-one".