1561200063 has 8 divisors (see below), whose sum is σ = 2082539568. Its totient is φ = 1040330304.

The previous prime is 1561200029. The next prime is 1561200071. The reversal of 1561200063 is 3600021651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1561200063 - 2¹⁰ = 1561199039 is a prime.

It is a super-2 number, since 2×1561200063² = 4874691273422407938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1561200013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109606 + ... + 123027.

It is an arithmetic number, because the mean of its divisors is an integer number (260317446).

Almost surely, 2^1561200063 is an apocalyptic number.

1561200063 is a deficient number, since it is larger than the sum of its proper divisors (521339505).

1561200063 is a wasteful number, since it uses less digits than its factorization.

1561200063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234873.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1561200063 is about 39512.0242837544. The cubic root of 1561200063 is about 1160.0753178900.

The spelling of 1561200063 in words is "one billion, five hundred sixty-one million, two hundred thousand, sixty-three".