21627211560 has 64 divisors (see below), whose sum is σ = 64895990400. Its totient is φ = 5765980416.

The previous prime is 21627211559. The next prime is 21627211561. The reversal of 21627211560 is 6511272612.

It is an interprime number because it is at equal distance from previous prime (21627211559) and next prime (21627211561).

It is not an unprimeable number, because it can be changed into a prime (21627211561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 606301 + ... + 640979.

It is an arithmetic number, because the mean of its divisors is an integer number (1013999850).

Almost surely, 2^21627211560 is an apocalyptic number.

21627211560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21627211560 is an abundant number, since it is smaller than the sum of its proper divisors (43268778840).

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

21627211560 is a wasteful number, since it uses less digits than its factorization.

21627211560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39890 (or 39886 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The spelling of 21627211560 in words is "twenty-one billion, six hundred twenty-seven million, two hundred eleven thousand, five hundred sixty".