21145450358 has 8 divisors (see below), whose sum is σ = 31722658560. Its totient is φ = 10571230840.

The previous prime is 21145450349. The next prime is 21145450373. The reversal of 21145450358 is 85305454112.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 729398 + ... + 757833.

It is an arithmetic number, because the mean of its divisors is an integer number (3965332320).

Almost surely, 2^21145450358 is an apocalyptic number.

21145450358 is a deficient number, since it is larger than the sum of its proper divisors (10577208202).

21145450358 is a wasteful number, since it uses less digits than its factorization.

21145450358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494342.

The product of its (nonzero) digits is 96000, while the sum is 38.

The spelling of 21145450358 in words is "twenty-one billion, one hundred forty-five million, four hundred fifty thousand, three hundred fifty-eight".