866126738542835 has 16 divisors (see below), whose sum is σ = 1295815588054272. Its totient is φ = 539923161688800.

The previous prime is 866126738542823. The next prime is 866126738542859. The reversal of 866126738542835 is 538245837621668.

It is not a de Polignac number, because 866126738542835 - 2¹⁴ = 866126738526451 is a prime.

It is a Duffinian 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, 1124839919801 + ... + 1124839920570.

It is an arithmetic number, because the mean of its divisors is an integer number (80988474253392).

Almost surely, 2^{866126738542835} is an apocalyptic number.

866126738542835 is a deficient number, since it is larger than the sum of its proper divisors (429688849511437).

866126738542835 is a wasteful number, since it uses less digits than its factorization.

866126738542835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2249679840394.

The product of its digits is 2786918400, while the sum is 74.

The spelling of 866126738542835 in words is "eight hundred sixty-six trillion, one hundred twenty-six billion, seven hundred thirty-eight million, five hundred forty-two thousand, eight hundred thirty-five".