126539564176 has 45 divisors (see below), whose sum is σ = 247673961561. Its totient is φ = 62630190336.

The previous prime is 126539564171. The next prime is 126539564227. The reversal of 126539564176 is 671465935621.

It is a happy number.

The square root of 126539564176 is 355724.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2229728400 + 124309835776 = 47220^2 + 352576^2 .

It is a super-2 number, since 2×126539564176² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126539564171) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 160786855 + ... + 160787641.

Almost surely, 2^126539564176 is an apocalyptic number.

126539564176 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

126539564176 is the 355724-th square number.

It is an amenable number.

126539564176 is a deficient number, since it is larger than the sum of its proper divisors (121134397385).

126539564176 is an frugal number, since it uses more digits than its factorization.

126539564176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808 (or 902 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 55.

The spelling of 126539564176 in words is "one hundred twenty-six billion, five hundred thirty-nine million, five hundred sixty-four thousand, one hundred seventy-six".