487138825561 has 16 divisors (see below), whose sum is σ = 526894917120. Its totient is φ = 448620851200.

The previous prime is 487138825489. The next prime is 487138825619. The reversal of 487138825561 is 165528831784.

It is a cyclic number.

It is not a de Polignac number, because 487138825561 - 2⁹ = 487138825049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 487138825496 and 487138825505.

It is not an unprimeable number, because it can be changed into a prime (487138825361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3355836 + ... + 3497986.

It is an arithmetic number, because the mean of its divisors is an integer number (32930932320).

Almost surely, 2^487138825561 is an apocalyptic number.

It is an amenable number.

487138825561 is a deficient number, since it is larger than the sum of its proper divisors (39756091559).

487138825561 is a wasteful number, since it uses less digits than its factorization.

487138825561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146504.

The product of its digits is 12902400, while the sum is 58.

The spelling of 487138825561 in words is "four hundred eighty-seven billion, one hundred thirty-eight million, eight hundred twenty-five thousand, five hundred sixty-one".