87435661827 has 4 divisors (see below), whose sum is σ = 116580882440. Its totient is φ = 58290441216.

The previous prime is 87435661823. The next prime is 87435661837. The reversal of 87435661827 is 72816653478.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 87435661827 - 2² = 87435661823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87435661823) 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, 14572610302 + ... + 14572610307.

It is an arithmetic number, because the mean of its divisors is an integer number (29145220610).

Almost surely, 2^87435661827 is an apocalyptic number.

87435661827 is a deficient number, since it is larger than the sum of its proper divisors (29145220613).

87435661827 is a wasteful number, since it uses less digits than its factorization.

87435661827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29145220612.

The product of its digits is 13547520, while the sum is 57.

The spelling of 87435661827 in words is "eighty-seven billion, four hundred thirty-five million, six hundred sixty-one thousand, eight hundred twenty-seven".