126506815584 has 48 divisors (see below), whose sum is σ = 336283960320. Its totient is φ = 41635152000.

The previous prime is 126506815577. The next prime is 126506815627. The reversal of 126506815584 is 485518605621.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×126506815584² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8332792 + ... + 8347959.

It is an arithmetic number, because the mean of its divisors is an integer number (7005915840).

Almost surely, 2^126506815584 is an apocalyptic number.

It is an amenable number.

126506815584 is an abundant number, since it is smaller than the sum of its proper divisors (209777144736).

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

126506815584 is a wasteful number, since it uses less digits than its factorization.

126506815584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16680843 (or 16680835 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 51.

The spelling of 126506815584 in words is "one hundred twenty-six billion, five hundred six million, eight hundred fifteen thousand, five hundred eighty-four".