63430402025556 has 18 divisors (see below), whose sum is σ = 160337960675802. Its totient is φ = 21143467341840.

The previous prime is 63430402025519. The next prime is 63430402025581. The reversal of 63430402025556 is 65552020403436.

63430402025556 is a `hidden beast` number, since 6 + 3 + 4 + 30 + 40 + 2 + 0 + 25 + 556 = 666.

It can be written as a sum of positive squares in only one way, i.e., 63420772528656 + 9629496900 = 7963716^2 + 98130^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×63430402025556² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 880977805875 + ... + 880977805946.

It is an arithmetic number, because the mean of its divisors is an integer number (8907664481989).

Almost surely, 2^{63430402025556} is an apocalyptic number.

It is an amenable number.

63430402025556 is an abundant number, since it is smaller than the sum of its proper divisors (96907558650246).

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

63430402025556 is a wasteful number, since it uses less digits than its factorization.

63430402025556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761955611831 (or 1761955611826 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 45.

The spelling of 63430402025556 in words is "sixty-three trillion, four hundred thirty billion, four hundred two million, twenty-five thousand, five hundred fifty-six".