21346050145 has 32 divisors (see below), whose sum is σ = 29721305088. Its totient is φ = 14415625728.

The previous prime is 21346050133. The next prime is 21346050149. The reversal of 21346050145 is 54105064312.

It is a happy number.

It is not a de Polignac number, because 21346050145 - 2¹⁷ = 21345919073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21346050149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 591439 + ... + 626491.

It is an arithmetic number, because the mean of its divisors is an integer number (928790784).

Almost surely, 2^21346050145 is an apocalyptic number.

It is an amenable number.

21346050145 is a deficient number, since it is larger than the sum of its proper divisors (8375254943).

21346050145 is a wasteful number, since it uses less digits than its factorization.

21346050145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35329.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 21346050145 in words is "twenty-one billion, three hundred forty-six million, fifty thousand, one hundred forty-five".