87626101205 has 4 divisors (see below), whose sum is σ = 105151321452. Its totient is φ = 70100880960.

The previous prime is 87626101193. The next prime is 87626101207. The reversal of 87626101205 is 50210162678.

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 9518148721 + 78107952484 = 97561^2 + 279478^2 .

It is not a de Polignac number, because 87626101205 - 2⁶ = 87626101141 is a prime.

It is a super-2 number, since 2×87626101205² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87626101207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8762610116 + ... + 8762610125.

It is an arithmetic number, because the mean of its divisors is an integer number (26287830363).

Almost surely, 2^87626101205 is an apocalyptic number.

It is an amenable number.

87626101205 is a deficient number, since it is larger than the sum of its proper divisors (17525220247).

87626101205 is a wasteful number, since it uses less digits than its factorization.

87626101205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17525220246.

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 87626101205 in words is "eighty-seven billion, six hundred twenty-six million, one hundred one thousand, two hundred five".