87773576393 has 4 divisors (see below), whose sum is σ = 89083629840. Its totient is φ = 86463522948.

The previous prime is 87773576381. The next prime is 87773576453. The reversal of 87773576393 is 39367537778.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39367537778 = 2 ⋅19683768889.

It is a cyclic number.

It is not a de Polignac number, because 87773576393 - 2¹² = 87773572297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87779576393) 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, 655026623 + ... + 655026756.

It is an arithmetic number, because the mean of its divisors is an integer number (22270907460).

Almost surely, 2^87773576393 is an apocalyptic number.

It is an amenable number.

87773576393 is a deficient number, since it is larger than the sum of its proper divisors (1310053447).

87773576393 is a wasteful number, since it uses less digits than its factorization.

87773576393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310053446.

The product of its digits is 140026320, while the sum is 65.

The spelling of 87773576393 in words is "eighty-seven billion, seven hundred seventy-three million, five hundred seventy-six thousand, three hundred ninety-three".