126515289039 has 4 divisors (see below), whose sum is σ = 168687052056. Its totient is φ = 84343526024.

The previous prime is 126515289007. The next prime is 126515289041. The reversal of 126515289039 is 930982515621.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 126515289039 - 2⁵ = 126515289007 is a prime.

It is a super-2 number, since 2×126515289039² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126515288982 and 126515289000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126515289839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21085881504 + ... + 21085881509.

It is an arithmetic number, because the mean of its divisors is an integer number (42171763014).

Almost surely, 2^126515289039 is an apocalyptic number.

126515289039 is a deficient number, since it is larger than the sum of its proper divisors (42171763017).

126515289039 is an equidigital number, since it uses as much as digits as its factorization.

126515289039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42171763016.

The product of its (nonzero) digits is 1166400, while the sum is 51.

The spelling of 126515289039 in words is "one hundred twenty-six billion, five hundred fifteen million, two hundred eighty-nine thousand, thirty-nine".