21552106652 has 6 divisors (see below), whose sum is σ = 37716186648. Its totient is φ = 10776053324.

The previous prime is 21552106571. The next prime is 21552106679. The reversal of 21552106652 is 25660125512.

It is a super-2 number, since 2×21552106652² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2694013328 + ... + 2694013335.

It is an arithmetic number, because the mean of its divisors is an integer number (6286031108).

Almost surely, 2^21552106652 is an apocalyptic number.

It is an amenable number.

21552106652 is a deficient number, since it is larger than the sum of its proper divisors (16164079996).

21552106652 is a wasteful number, since it uses less digits than its factorization.

21552106652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5388026667 (or 5388026665 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 21552106652 in words is "twenty-one billion, five hundred fifty-two million, one hundred six thousand, six hundred fifty-two".