21035038360 has 32 divisors (see below), whose sum is σ = 54090099360. Its totient is φ = 7212013056.

The previous prime is 21035038331. The next prime is 21035038361. The reversal of 21035038360 is 6383053012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21035038361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37562289 + ... + 37562848.

It is an arithmetic number, because the mean of its divisors is an integer number (1690315605).

Almost surely, 2^21035038360 is an apocalyptic number.

21035038360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21035038360 is an abundant number, since it is smaller than the sum of its proper divisors (33055061000).

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

21035038360 is a wasteful number, since it uses less digits than its factorization.

21035038360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75125155 (or 75125151 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 21035038360 in words is "twenty-one billion, thirty-five million, thirty-eight thousand, three hundred sixty".