126396756618 has 64 divisors (see below), whose sum is σ = 282429296640. Its totient is φ = 37382360000.

The previous prime is 126396756617. The next prime is 126396756691. The reversal of 126396756618 is 816657693621.

It is a super-2 number, since 2×126396756618² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126396756613) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1056868 + ... + 1170368.

It is an arithmetic number, because the mean of its divisors is an integer number (4412957760).

Almost surely, 2^126396756618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126396756618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141214648320).

126396756618 is an abundant number, since it is smaller than the sum of its proper divisors (156032540022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126396756618 is a wasteful number, since it uses less digits than its factorization.

126396756618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113923.

The product of its digits is 19595520, while the sum is 60.

The spelling of 126396756618 in words is "one hundred twenty-six billion, three hundred ninety-six million, seven hundred fifty-six thousand, six hundred eighteen".