21302040160 has 48 divisors (see below), whose sum is σ = 50349355056. Its totient is φ = 8516873728.

The previous prime is 21302040139. The next prime is 21302040163. The reversal of 21302040160 is 6104020312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302040163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329202 + ... + 388558.

It is an arithmetic number, because the mean of its divisors is an integer number (1048944897).

Almost surely, 2^21302040160 is an apocalyptic number.

21302040160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21302040160 is an abundant number, since it is smaller than the sum of its proper divisors (29047314896).

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

21302040160 is a wasteful number, since it uses less digits than its factorization.

21302040160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61615 (or 61607 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21302040160 its reverse (6104020312), we get a palindrome (27406060472).

The spelling of 21302040160 in words is "twenty-one billion, three hundred two million, forty thousand, one hundred sixty".