21253235245662 has 16 divisors (see below), whose sum is σ = 48578823418752. Its totient is φ = 6072352927320.

The previous prime is 21253235245657. The next prime is 21253235245679. The reversal of 21253235245662 is 26654253235212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253014705264 + ... + 253014705347.

It is an arithmetic number, because the mean of its divisors is an integer number (3036176463672).

Almost surely, 2^{21253235245662} is an apocalyptic number.

21253235245662 is an abundant number, since it is smaller than the sum of its proper divisors (27325588173090).

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

21253235245662 is a wasteful number, since it uses less digits than its factorization.

21253235245662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506029410623.

The product of its digits is 5184000, while the sum is 48.

The spelling of 21253235245662 in words is "twenty-one trillion, two hundred fifty-three billion, two hundred thirty-five million, two hundred forty-five thousand, six hundred sixty-two".