87773606553 has 16 divisors (see below), whose sum is σ = 120917351936. Its totient is φ = 56576257920.

The previous prime is 87773606533. The next prime is 87773606579. The reversal of 87773606553 is 35560637778.

It is not a de Polignac number, because 87773606553 - 2²¹ = 87771509401 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87773606493 and 87773606502.

It is not an unprimeable number, because it can be changed into a prime (87773606513) 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, 330100 + ... + 533397.

It is an arithmetic number, because the mean of its divisors is an integer number (7557334496).

Almost surely, 2^87773606553 is an apocalyptic number.

It is an amenable number.

87773606553 is a deficient number, since it is larger than the sum of its proper divisors (33143745383).

87773606553 is a wasteful number, since it uses less digits than its factorization.

87773606553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864624.

The product of its (nonzero) digits is 22226400, while the sum is 57.

The spelling of 87773606553 in words is "eighty-seven billion, seven hundred seventy-three million, six hundred six thousand, five hundred fifty-three".