427555550556 has 36 divisors (see below), whose sum is σ = 1085526521352. Its totient is φ = 141890679264.

The previous prime is 427555550533. The next prime is 427555550561. The reversal of 427555550556 is 655055555724.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×427555550556² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26151615 + ... + 26167958.

It is an arithmetic number, because the mean of its divisors is an integer number (30153514482).

Almost surely, 2^427555550556 is an apocalyptic number.

It is an amenable number.

427555550556 is an abundant number, since it is smaller than the sum of its proper divisors (657970970796).

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

427555550556 is a wasteful number, since it uses less digits than its factorization.

427555550556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52319810 (or 52319805 counting only the distinct ones).

The product of its (nonzero) digits is 26250000, while the sum is 54.

The spelling of 427555550556 in words is "four hundred twenty-seven billion, five hundred fifty-five million, five hundred fifty thousand, five hundred fifty-six".