1256054652063 has 16 divisors (see below), whose sum is σ = 1867397059840. Its totient is φ = 834410859192.

The previous prime is 1256054652037. The next prime is 1256054652071. The reversal of 1256054652063 is 3602564506521.

1256054652063 is a `hidden beast` number, since 1 + 2 + 5 + 60 + 5 + 4 + 6 + 520 + 63 = 666.

It is not a de Polignac number, because 1256054652063 - 2³⁷ = 1118615698591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256054652023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82184131 + ... + 82199412.

It is an arithmetic number, because the mean of its divisors is an integer number (116712316240).

Almost surely, 2^{1256054652063} is an apocalyptic number.

1256054652063 is a deficient number, since it is larger than the sum of its proper divisors (611342407777).

1256054652063 is a wasteful number, since it uses less digits than its factorization.

1256054652063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164383835 (or 164383829 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

The spelling of 1256054652063 in words is "one trillion, two hundred fifty-six billion, fifty-four million, six hundred fifty-two thousand, sixty-three".