126565249000 has 32 divisors (see below), whose sum is σ = 296162685000. Its totient is φ = 50626099200.

The previous prime is 126565248991. The next prime is 126565249003. The reversal of 126565249000 is 942565621.

It can be written as a sum of positive squares in 4 ways, for example, as 8164568164 + 118400680836 = 90358^2 + 344094^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (126565249003) 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 7 ways as a sum of consecutive naturals, for example, 63281625 + ... + 63283624.

Almost surely, 2^126565249000 is an apocalyptic number.

126565249000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126565249000 is an abundant number, since it is smaller than the sum of its proper divisors (169597436000).

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

126565249000 is a wasteful number, since it uses less digits than its factorization.

126565249000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126565270 (or 126565256 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 126565249000 in words is "one hundred twenty-six billion, five hundred sixty-five million, two hundred forty-nine thousand".