21464711642 has 8 divisors (see below), whose sum is σ = 35124073632. Its totient is φ = 9756687100.

The previous prime is 21464711641. The next prime is 21464711699. The reversal of 21464711642 is 24611746412.

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

It is a junction number, because it is equal to n+sod(n) for n = 21464711596 and 21464711605.

It is not an unprimeable number, because it can be changed into a prime (21464711641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487834334 + ... + 487834377.

It is an arithmetic number, because the mean of its divisors is an integer number (4390509204).

Almost surely, 2^21464711642 is an apocalyptic number.

21464711642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21464711642 is a deficient number, since it is larger than the sum of its proper divisors (13659361990).

21464711642 is a wasteful number, since it uses less digits than its factorization.

21464711642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975668724.

The product of its digits is 64512, while the sum is 38.

The spelling of 21464711642 in words is "twenty-one billion, four hundred sixty-four million, seven hundred eleven thousand, six hundred forty-two".