126601510065 has 16 divisors (see below), whose sum is σ = 203852626368. Its totient is φ = 67090735296.

The previous prime is 126601510039. The next prime is 126601510073. The reversal of 126601510065 is 560015106621.

It is not a de Polignac number, because 126601510065 - 2¹⁵ = 126601477297 is a prime.

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, 26876947 + ... + 26881656.

It is an arithmetic number, because the mean of its divisors is an integer number (12740789148).

Almost surely, 2^126601510065 is an apocalyptic number.

126601510065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126601510065 is a deficient number, since it is larger than the sum of its proper divisors (77251116303).

126601510065 is a wasteful number, since it uses less digits than its factorization.

126601510065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53758768.

The product of its (nonzero) digits is 10800, while the sum is 33.

Adding to 126601510065 its reverse (560015106621), we get a palindrome (686616616686).

The spelling of 126601510065 in words is "one hundred twenty-six billion, six hundred one million, five hundred ten thousand, sixty-five".