21301701774 has 16 divisors (see below), whose sum is σ = 42642253008. Its totient is φ = 7094092352.

The previous prime is 21301701763. The next prime is 21301701779. The reversal of 21301701774 is 47710710312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21301701779) 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 7 ways as a sum of consecutive naturals, for example, 1611597 + ... + 1624760.

It is an arithmetic number, because the mean of its divisors is an integer number (2665140813).

Almost surely, 2^21301701774 is an apocalyptic number.

21301701774 is an abundant number, since it is smaller than the sum of its proper divisors (21340551234).

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

21301701774 is a wasteful number, since it uses less digits than its factorization.

21301701774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3237459.

The product of its (nonzero) digits is 8232, while the sum is 33.

The spelling of 21301701774 in words is "twenty-one billion, three hundred one million, seven hundred one thousand, seven hundred seventy-four".