21562045352 has 8 divisors (see below), whose sum is σ = 40428835050. Its totient is φ = 10781022672.

The previous prime is 21562045339. The next prime is 21562045369. The reversal of 21562045352 is 25354026512.

It can be written as a sum of positive squares in only one way, i.e., 18443269636 + 3118775716 = 135806^2 + 55846^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1347627827 + ... + 1347627842.

Almost surely, 2^21562045352 is an apocalyptic number.

It is an amenable number.

21562045352 is a deficient number, since it is larger than the sum of its proper divisors (18866789698).

21562045352 is a wasteful number, since it uses less digits than its factorization.

21562045352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2695255675 (or 2695255671 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 21562045352 in words is "twenty-one billion, five hundred sixty-two million, forty-five thousand, three hundred fifty-two".