126886646385 has 24 divisors (see below), whose sum is σ = 220418151720. Its totient is φ = 67524786432.

The previous prime is 126886646321. The next prime is 126886646389. The reversal of 126886646385 is 583646688621.

It is a happy number.

126886646385 is a `hidden beast` number, since 12 + 6 + 8 + 86 + 6 + 463 + 85 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 13579007841 + 113307638544 = 116529^2 + 336612^2 .

It is not a de Polignac number, because 126886646385 - 2⁶ = 126886646321 is a prime.

It is a super-2 number, since 2×126886646385² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126886646389) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3064450 + ... + 3105579.

It is an arithmetic number, because the mean of its divisors is an integer number (9184089655).

Almost surely, 2^126886646385 is an apocalyptic number.

126886646385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126886646385 is a deficient number, since it is larger than the sum of its proper divisors (93531505335).

126886646385 is a wasteful number, since it uses less digits than its factorization.

126886646385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6170497 (or 6170494 counting only the distinct ones).

The product of its digits is 79626240, while the sum is 63.

The spelling of 126886646385 in words is "one hundred twenty-six billion, eight hundred eighty-six million, six hundred forty-six thousand, three hundred eighty-five".