10204061766781 has 16 divisors (see below), whose sum is σ = 10274541445440. Its totient is φ = 10133828046720.

The previous prime is 10204061766761. The next prime is 10204061766793. The reversal of 10204061766781 is 18766716040201.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10204061766781 is a prime.

It is a super-2 number, since 2×10204061766781² (a number of 27 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 (10204061766761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240260910 + ... + 240303376.

It is an arithmetic number, because the mean of its divisors is an integer number (642158840340).

Almost surely, 2^{10204061766781} is an apocalyptic number.

It is an amenable number.

10204061766781 is a deficient number, since it is larger than the sum of its proper divisors (70479678659).

10204061766781 is a wasteful number, since it uses less digits than its factorization.

10204061766781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45324.

The product of its (nonzero) digits is 677376, while the sum is 49.

The spelling of 10204061766781 in words is "ten trillion, two hundred four billion, sixty-one million, seven hundred sixty-six thousand, seven hundred eighty-one".