126513035613 has 12 divisors (see below), whose sum is σ = 184550370108. Its totient is φ = 83506953600.

The previous prime is 126513035587. The next prime is 126513035647. The reversal of 126513035613 is 316530315621.

126513035613 is a `hidden beast` number, since 1 + 2 + 6 + 5 + 1 + 3 + 0 + 35 + 613 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 118758119769 + 7754915844 = 344613^2 + 88062^2 .

It is not a de Polignac number, because 126513035613 - 2¹² = 126513031517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126513035653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69588220 + ... + 69590037.

It is an arithmetic number, because the mean of its divisors is an integer number (15379197509).

Almost surely, 2^126513035613 is an apocalyptic number.

It is an amenable number.

126513035613 is a deficient number, since it is larger than the sum of its proper divisors (58037334495).

126513035613 is a wasteful number, since it uses less digits than its factorization.

126513035613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139178364 (or 139178361 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The spelling of 126513035613 in words is "one hundred twenty-six billion, five hundred thirteen million, thirty-five thousand, six hundred thirteen".