126017661402 has 24 divisors (see below), whose sum is σ = 273686829780. Its totient is φ = 41906108160.

The previous prime is 126017661401. The next prime is 126017661437. The reversal of 126017661402 is 204166710621.

126017661402 is a `hidden beast` number, since 1 + 2 + 601 + 7 + 6 + 6 + 1 + 40 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 67850351361 + 58167310041 = 260481^2 + 241179^2 .

It is not an unprimeable number, because it can be changed into a prime (126017661401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8307127 + ... + 8322282.

Almost surely, 2^126017661402 is an apocalyptic number.

126017661402 is an abundant number, since it is smaller than the sum of its proper divisors (147669168378).

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

126017661402 is a wasteful number, since it uses less digits than its factorization.

126017661402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16629838 (or 16629835 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 126017661402 in words is "one hundred twenty-six billion, seventeen million, six hundred sixty-one thousand, four hundred two".