87882979049 has 4 divisors (see below), whose sum is σ = 87893982036. Its totient is φ = 87871976064.

The previous prime is 87882979043. The next prime is 87882979057. The reversal of 87882979049 is 94097928878.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19052833024 + 68830146025 = 138032^2 + 262355^2 .

It is a cyclic number.

It is not a de Polignac number, because 87882979049 - 2⁴ = 87882979033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87882979043) 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, 5489504 + ... + 5505489.

It is an arithmetic number, because the mean of its divisors is an integer number (21973495509).

Almost surely, 2^87882979049 is an apocalyptic number.

It is an amenable number.

87882979049 is a deficient number, since it is larger than the sum of its proper divisors (11002987).

87882979049 is a wasteful number, since it uses less digits than its factorization.

87882979049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11002986.

The product of its (nonzero) digits is 146313216, while the sum is 71.

The spelling of 87882979049 in words is "eighty-seven billion, eight hundred eighty-two million, nine hundred seventy-nine thousand, forty-nine".