10406242012261 has 4 divisors (see below), whose sum is σ = 10418825135232. Its totient is φ = 10393658889292.

The previous prime is 10406242012183. The next prime is 10406242012279. The reversal of 10406242012261 is 16221024260401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10406242012261 - 2¹⁹ = 10406241487973 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 (10406242012561) 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, 6291560245 + ... + 6291561898.

It is an arithmetic number, because the mean of its divisors is an integer number (2604706283808).

Almost surely, 2^{10406242012261} is an apocalyptic number.

It is an amenable number.

10406242012261 is a deficient number, since it is larger than the sum of its proper divisors (12583122971).

10406242012261 is an equidigital number, since it uses as much as digits as its factorization.

10406242012261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12583122970.

The product of its (nonzero) digits is 9216, while the sum is 31.

Adding to 10406242012261 its reverse (16221024260401), we get a palindrome (26627266272662).

The spelling of 10406242012261 in words is "ten trillion, four hundred six billion, two hundred forty-two million, twelve thousand, two hundred sixty-one".