126938288656 has 15 divisors (see below), whose sum is σ = 245945695503. Its totient is φ = 63468431760.

The previous prime is 126938288623. The next prime is 126938288657. The reversal of 126938288656 is 656882839621.

The square root of 126938288656 is 356284.

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

It is a super-2 number, since 2×126938288656² (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 (126938288657) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1380601 + ... + 1469671.

Almost surely, 2^126938288656 is an apocalyptic number.

126938288656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

126938288656 is the 356284-th square number.

It is an amenable number.

126938288656 is a deficient number, since it is larger than the sum of its proper divisors (119007406847).

126938288656 is an frugal number, since it uses more digits than its factorization.

126938288656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178150 (or 89073 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 64.

Multiplying 126938288656 by its sum of digits (64), we get a square (8124050473984 = 2850272²).

The spelling of 126938288656 in words is "one hundred twenty-six billion, nine hundred thirty-eight million, two hundred eighty-eight thousand, six hundred fifty-six".