126455787810561 has 32 divisors (see below), whose sum is σ = 189875263205376. Its totient is φ = 74165210280000.

The previous prime is 126455787810421. The next prime is 126455787810577. The reversal of 126455787810561 is 165018787554621.

It is not a de Polignac number, because 126455787810561 - 2¹⁸ = 126455787548417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126455787810492 and 126455787810501.

It is not an unprimeable number, because it can be changed into a prime (126455787010561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29774695 + ... + 33755651.

It is an arithmetic number, because the mean of its divisors is an integer number (5933601975168).

Almost surely, 2^{126455787810561} is an apocalyptic number.

126455787810561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

126455787810561 is a deficient number, since it is larger than the sum of its proper divisors (63419475394815).

126455787810561 is a wasteful number, since it uses less digits than its factorization.

126455787810561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4012053.

The product of its (nonzero) digits is 112896000, while the sum is 66.

The spelling of 126455787810561 in words is "one hundred twenty-six trillion, four hundred fifty-five billion, seven hundred eighty-seven million, eight hundred ten thousand, five hundred sixty-one".