21150036240546 has 32 divisors (see below), whose sum is σ = 45962727321600. Its totient is φ = 6463508527440.

The previous prime is 21150036240533. The next prime is 21150036240601. The reversal of 21150036240546 is 64504263005112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2992361526 + ... + 2992368593.

It is an arithmetic number, because the mean of its divisors is an integer number (1436335228800).

Almost surely, 2^{21150036240546} is an apocalyptic number.

21150036240546 is an abundant number, since it is smaller than the sum of its proper divisors (24812691081054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21150036240546 is a wasteful number, since it uses less digits than its factorization.

21150036240546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5984730174.

The product of its (nonzero) digits is 172800, while the sum is 39.

Adding to 21150036240546 its reverse (64504263005112), we get a palindrome (85654299245658).

The spelling of 21150036240546 in words is "twenty-one trillion, one hundred fifty billion, thirty-six million, two hundred forty thousand, five hundred forty-six".