103128605261 has 8 divisors (see below), whose sum is σ = 112507863744. Its totient is φ = 93750001920.

The previous prime is 103128605233. The next prime is 103128605267. The reversal of 103128605261 is 162506821301.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103128605261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103128605267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200621 + ... + 496493.

It is an arithmetic number, because the mean of its divisors is an integer number (14063482968).

Almost surely, 2^103128605261 is an apocalyptic number.

103128605261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

103128605261 is a deficient number, since it is larger than the sum of its proper divisors (9379258483).

103128605261 is a wasteful number, since it uses less digits than its factorization.

103128605261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327571.

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 103128605261 in words is "one hundred three billion, one hundred twenty-eight million, six hundred five thousand, two hundred sixty-one".