21350740466 has 8 divisors (see below), whose sum is σ = 34937575344. Its totient is φ = 9704882020.

The previous prime is 21350740459. The next prime is 21350740469. The reversal of 21350740466 is 66404705312.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (21350740469) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 485244080 + ... + 485244123.

It is an arithmetic number, because the mean of its divisors is an integer number (4367196918).

Almost surely, 2^21350740466 is an apocalyptic number.

21350740466 is a deficient number, since it is larger than the sum of its proper divisors (13586834878).

21350740466 is a wasteful number, since it uses less digits than its factorization.

21350740466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970488216.

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 21350740466 in words is "twenty-one billion, three hundred fifty million, seven hundred forty thousand, four hundred sixty-six".