56503191616 has 63 divisors (see below), whose sum is σ = 114958049103. Its totient is φ = 27554647680.

The previous prime is 56503191611. The next prime is 56503191617. The reversal of 56503191616 is 61619130565.

The square root of 56503191616 is 237704.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×56503191616² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56503191611) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 81769831 + ... + 81770521.

Almost surely, 2^56503191616 is an apocalyptic number.

56503191616 is the 237704-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56503191616

56503191616 is an abundant number, since it is smaller than the sum of its proper divisors (58454857487).

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

56503191616 is an frugal number, since it uses more digits than its factorization.

56503191616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480 (or 736 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 43.

The spelling of 56503191616 in words is "fifty-six billion, five hundred three million, one hundred ninety-one thousand, six hundred sixteen".