126720056104064 has 64 divisors (see below), whose sum is σ = 265739526837600. Its totient is φ = 60024709877760.

The previous prime is 126720056104063. The next prime is 126720056104099. The reversal of 126720056104064 is 460401650027621.

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

It is not an unprimeable number, because it can be changed into a prime (126720056104063) 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, 354117359 + ... + 354475025.

Almost surely, 2^{126720056104064} is an apocalyptic number.

It is an amenable number.

126720056104064 is an abundant number, since it is smaller than the sum of its proper divisors (139019470733536).

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

126720056104064 is a wasteful number, since it uses less digits than its factorization.

126720056104064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503381 (or 503369 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 126720056104064 in words is "one hundred twenty-six trillion, seven hundred twenty billion, fifty-six million, one hundred four thousand, sixty-four".