87670414138 has 4 divisors (see below), whose sum is σ = 131505621210. Its totient is φ = 43835207068.

The previous prime is 87670414129. The next prime is 87670414201. The reversal of 87670414138 is 83141407678.

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

It can be written as a sum of positive squares in only one way, i.e., 84583833889 + 3086580249 = 290833^2 + 55557^2 .

It is a super-2 number, since 2×87670414138² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 87670414091 and 87670414100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21917603533 + ... + 21917603536.

Almost surely, 2^87670414138 is an apocalyptic number.

87670414138 is a deficient number, since it is larger than the sum of its proper divisors (43835207072).

87670414138 is a wasteful number, since it uses less digits than its factorization.

87670414138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43835207071.

The product of its (nonzero) digits is 903168, while the sum is 49.

The spelling of 87670414138 in words is "eighty-seven billion, six hundred seventy million, four hundred fourteen thousand, one hundred thirty-eight".