400763126508 has 96 divisors (see below), whose sum is σ = 988284810240. Its totient is φ = 126049239360.

The previous prime is 400763126507. The next prime is 400763126629. The reversal of 400763126508 is 805621367004.

It is a super-2 number, since 2×400763126508² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400763126508.

It is not an unprimeable number, because it can be changed into a prime (400763126501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86313235 + ... + 86317877.

It is an arithmetic number, because the mean of its divisors is an integer number (10294633440).

Almost surely, 2^400763126508 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400763126508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (494142405120).

400763126508 is an abundant number, since it is smaller than the sum of its proper divisors (587521683732).

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

400763126508 is a wasteful number, since it uses less digits than its factorization.

400763126508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6107 (or 6105 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 400763126508 in words is "four hundred billion, seven hundred sixty-three million, one hundred twenty-six thousand, five hundred eight".