87491839627 has 4 divisors (see below), whose sum is σ = 87492758760. Its totient is φ = 87490920496.

The previous prime is 87491839579. The next prime is 87491839637. The reversal of 87491839627 is 72693819478.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 87491839627 - 2²³ = 87483451019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87491839637) 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, 297802 + ... + 513487.

It is an arithmetic number, because the mean of its divisors is an integer number (21873189690).

Almost surely, 2^87491839627 is an apocalyptic number.

87491839627 is a deficient number, since it is larger than the sum of its proper divisors (919133).

87491839627 is a wasteful number, since it uses less digits than its factorization.

87491839627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919132.

The product of its digits is 36578304, while the sum is 64.

The spelling of 87491839627 in words is "eighty-seven billion, four hundred ninety-one million, eight hundred thirty-nine thousand, six hundred twenty-seven".