10063800781 has 4 divisors (see below), whose sum is σ = 10064052700. Its totient is φ = 10063548864.

The previous prime is 10063800707. The next prime is 10063800809. The reversal of 10063800781 is 18700836001.

10063800781 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18700836001 = 136751².

It can be written as a sum of positive squares in 2 ways, for example, as 1783710756 + 8280090025 = 42234^2 + 90995^2 .

It is a cyclic number.

It is not a de Polignac number, because 10063800781 - 2⁹ = 10063800269 is a prime.

It is a super-2 number, since 2×10063800781² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10063803781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51276 + ... + 150853.

It is an arithmetic number, because the mean of its divisors is an integer number (2516013175).

Almost surely, 2^10063800781 is an apocalyptic number.

It is an amenable number.

10063800781 is a deficient number, since it is larger than the sum of its proper divisors (251919).

10063800781 is an equidigital number, since it uses as much as digits as its factorization.

10063800781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251918.

The product of its (nonzero) digits is 8064, while the sum is 34.

The spelling of 10063800781 in words is "ten billion, sixty-three million, eight hundred thousand, seven hundred eighty-one".