126609510573 has 48 divisors (see below), whose sum is σ = 238323810816. Its totient is φ = 62854617600.

The previous prime is 126609510557. The next prime is 126609510593. The reversal of 126609510573 is 375015906621.

126609510573 is a `hidden beast` number, since 1 + 2 + 6 + 60 + 9 + 5 + 10 + 573 = 666.

It is not a de Polignac number, because 126609510573 - 2⁴ = 126609510557 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126609510523) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4532853 + ... + 4560698.

It is an arithmetic number, because the mean of its divisors is an integer number (4965079392).

Almost surely, 2^126609510573 is an apocalyptic number.

126609510573 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

126609510573 is a deficient number, since it is larger than the sum of its proper divisors (111714300243).

126609510573 is a wasteful number, since it uses less digits than its factorization.

126609510573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9093594 (or 9093591 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The spelling of 126609510573 in words is "one hundred twenty-six billion, six hundred nine million, five hundred ten thousand, five hundred seventy-three".