21253235072062 has 32 divisors (see below), whose sum is σ = 36549682606080. Its totient is φ = 9079646257440.

The previous prime is 21253235072051. The next prime is 21253235072063. The reversal of 21253235072062 is 26027053235212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21253235072063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30794548 + ... + 31477144.

It is an arithmetic number, because the mean of its divisors is an integer number (1142177581440).

Almost surely, 2^{21253235072062} is an apocalyptic number.

21253235072062 is a deficient number, since it is larger than the sum of its proper divisors (15296447534018).

21253235072062 is a wasteful number, since it uses less digits than its factorization.

21253235072062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689656.

The product of its (nonzero) digits is 302400, while the sum is 40.

The spelling of 21253235072062 in words is "twenty-one trillion, two hundred fifty-three billion, two hundred thirty-five million, seventy-two thousand, sixty-two".