126546356520 has 48 divisors (see below), whose sum is σ = 411275659860. Its totient is φ = 33745694976.

The previous prime is 126546356437. The next prime is 126546356539. The reversal of 126546356520 is 25653645621.

126546356520 is a `hidden beast` number, since 1 + 2 + 6 + 5 + 4 + 63 + 565 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 125014573476 + 1531783044 = 353574^2 + 39138^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175758469 + ... + 175759188.

Almost surely, 2^126546356520 is an apocalyptic number.

126546356520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126546356520 is an abundant number, since it is smaller than the sum of its proper divisors (284729303340).

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

126546356520 is a wasteful number, since it uses less digits than its factorization.

126546356520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351517674 (or 351517667 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

The spelling of 126546356520 in words is "one hundred twenty-six billion, five hundred forty-six million, three hundred fifty-six thousand, five hundred twenty".