126091539801 has 12 divisors (see below), whose sum is σ = 182195921700. Its totient is φ = 84031627680.

The previous prime is 126091539797. The next prime is 126091539809. The reversal of 126091539801 is 108935190621.

126091539801 is a `hidden beast` number, since 1 + 2 + 609 + 1 + 5 + 39 + 8 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 82412629776 + 43678910025 = 287076^2 + 208995^2 .

It is not a de Polignac number, because 126091539801 - 2² = 126091539797 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126091539809) 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, 2422726 + ... + 2474223.

It is an arithmetic number, because the mean of its divisors is an integer number (15182993475).

Almost surely, 2^126091539801 is an apocalyptic number.

It is an amenable number.

126091539801 is a deficient number, since it is larger than the sum of its proper divisors (56104381899).

126091539801 is a wasteful number, since it uses less digits than its factorization.

126091539801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4899816 (or 4899813 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The spelling of 126091539801 in words is "one hundred twenty-six billion, ninety-one million, five hundred thirty-nine thousand, eight hundred one".