126451779256 has 32 divisors (see below), whose sum is σ = 260539357680. Its totient is φ = 57058528000.

The previous prime is 126451779253. The next prime is 126451779277. The reversal of 126451779256 is 652977154621.

It is a junction number, because it is equal to n+sod(n) for n = 126451779197 and 126451779206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126451779253) 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, 5232295 + ... + 5256406.

Almost surely, 2^126451779256 is an apocalyptic number.

It is an amenable number.

126451779256 is an abundant number, since it is smaller than the sum of its proper divisors (134087578424).

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

126451779256 is a wasteful number, since it uses less digits than its factorization.

126451779256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10488855 (or 10488851 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 55.

The spelling of 126451779256 in words is "one hundred twenty-six billion, four hundred fifty-one million, seven hundred seventy-nine thousand, two hundred fifty-six".