126979175712128 has 64 divisors (see below), whose sum is σ = 267880422438720. Its totient is φ = 59747382681600.

The previous prime is 126979175712121. The next prime is 126979175712143. The reversal of 126979175712128 is 821217571979621.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×126979175712128² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (68).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126979175712121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13631750 + ... + 20971002.

It is an arithmetic number, because the mean of its divisors is an integer number (4185631600605).

Almost surely, 2^{126979175712128} is an apocalyptic number.

It is an amenable number.

126979175712128 is an abundant number, since it is smaller than the sum of its proper divisors (140901246726592).

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

126979175712128 is an equidigital number, since it uses as much as digits as its factorization.

126979175712128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7347235 (or 7347223 counting only the distinct ones).

The product of its digits is 53343360, while the sum is 68.

The spelling of 126979175712128 in words is "one hundred twenty-six trillion, nine hundred seventy-nine billion, one hundred seventy-five million, seven hundred twelve thousand, one hundred twenty-eight".