21040150445 has 8 divisors (see below), whose sum is σ = 25279864344. Its totient is φ = 16810997824.

The previous prime is 21040150423. The next prime is 21040150457. The reversal of 21040150445 is 54405104012.

It can be written as a sum of positive squares in 4 ways, for example, as 231222436 + 20808928009 = 15206^2 + 144253^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 21040150445 - 2¹² = 21040146349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2635934 + ... + 2643903.

It is an arithmetic number, because the mean of its divisors is an integer number (3159983043).

Almost surely, 2^21040150445 is an apocalyptic number.

It is an amenable number.

21040150445 is a deficient number, since it is larger than the sum of its proper divisors (4239713899).

21040150445 is an equidigital number, since it uses as much as digits as its factorization.

21040150445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5280639.

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 21040150445 its reverse (54405104012), we get a palindrome (75445254457).

The spelling of 21040150445 in words is "twenty-one billion, forty million, one hundred fifty thousand, four hundred forty-five".