261026003830 has 16 divisors (see below), whose sum is σ = 471916620720. Its totient is φ = 103950442912.

The previous prime is 261026003743. The next prime is 261026003891. The reversal of 261026003830 is 38300620162.

It is a junction number, because it is equal to n+sod(n) for n = 261026003792 and 261026003801.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 57492445 + ... + 57496984.

It is an arithmetic number, because the mean of its divisors is an integer number (29494788795).

Almost surely, 2^261026003830 is an apocalyptic number.

261026003830 is a deficient number, since it is larger than the sum of its proper divisors (210890616890).

261026003830 is a wasteful number, since it uses less digits than its factorization.

261026003830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114989663.

The product of its (nonzero) digits is 10368, while the sum is 31.

Adding to 261026003830 its reverse (38300620162), we get a palindrome (299326623992).

The spelling of 261026003830 in words is "two hundred sixty-one billion, twenty-six million, three thousand, eight hundred thirty".