87917126245 has 16 divisors (see below), whose sum is σ = 113622752880. Its totient is φ = 64919545344.

The previous prime is 87917126221. The next prime is 87917126279. The reversal of 87917126245 is 54262171978.

It can be written as a sum of positive squares in 8 ways, for example, as 19214949924 + 68702176321 = 138618^2 + 262111^2 .

It is a cyclic number.

It is not a de Polignac number, because 87917126245 - 2²⁵ = 87883571813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87917126192 and 87917126201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1517857 + ... + 1574713.

It is an arithmetic number, because the mean of its divisors is an integer number (7101422055).

Almost surely, 2^87917126245 is an apocalyptic number.

It is an amenable number.

87917126245 is a deficient number, since it is larger than the sum of its proper divisors (25705626635).

87917126245 is a wasteful number, since it uses less digits than its factorization.

87917126245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80664.

The product of its digits is 1693440, while the sum is 52.

The spelling of 87917126245 in words is "eighty-seven billion, nine hundred seventeen million, one hundred twenty-six thousand, two hundred forty-five".