126551724252 has 24 divisors (see below), whose sum is σ = 297055549056. Its totient is φ = 41931309168.

The previous prime is 126551724209. The next prime is 126551724253. The reversal of 126551724252 is 252427155621.

It is a super-3 number, since 3×126551724252³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126551724253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31572778 + ... + 31576785.

It is an arithmetic number, because the mean of its divisors is an integer number (12377314544).

Almost surely, 2^126551724252 is an apocalyptic number.

126551724252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

126551724252 is an abundant number, since it is smaller than the sum of its proper divisors (170503824804).

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

126551724252 is a wasteful number, since it uses less digits than its factorization.

126551724252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63149737 (or 63149735 counting only the distinct ones).

The product of its digits is 336000, while the sum is 42.

Adding to 126551724252 its reverse (252427155621), we get a palindrome (378978879873).

The spelling of 126551724252 in words is "one hundred twenty-six billion, five hundred fifty-one million, seven hundred twenty-four thousand, two hundred fifty-two".