126503545212 has 72 divisors (see below), whose sum is σ = 350366693040. Its totient is φ = 38166981120.

The previous prime is 126503545159. The next prime is 126503545229. The reversal of 126503545212 is 212545305621.

126503545212 is a `hidden beast` number, since 126 + 5 + 0 + 3 + 5 + 4 + 521 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 606813 + ... + 788180.

It is an arithmetic number, because the mean of its divisors is an integer number (4866204070).

Almost surely, 2^126503545212 is an apocalyptic number.

126503545212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

126503545212 is an abundant number, since it is smaller than the sum of its proper divisors (223863147828).

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

126503545212 is a wasteful number, since it uses less digits than its factorization.

126503545212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395243 (or 1395238 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 126503545212 in words is "one hundred twenty-six billion, five hundred three million, five hundred forty-five thousand, two hundred twelve".