21474755548 has 24 divisors (see below), whose sum is σ = 40922859600. Its totient is φ = 9821484288.

The previous prime is 21474755537. The next prime is 21474755557. The reversal of 21474755548 is 84555747412.

It is a super-2 number, since 2×21474755548² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21474755495 and 21474755504.

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, 4869565 + ... + 4873972.

It is an arithmetic number, because the mean of its divisors is an integer number (1705119150).

Almost surely, 2^21474755548 is an apocalyptic number.

It is an amenable number.

21474755548 is a deficient number, since it is larger than the sum of its proper divisors (19448104052).

21474755548 is a wasteful number, since it uses less digits than its factorization.

21474755548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9743589 (or 9743587 counting only the distinct ones).

The product of its digits is 6272000, while the sum is 52.

The spelling of 21474755548 in words is "twenty-one billion, four hundred seventy-four million, seven hundred fifty-five thousand, five hundred forty-eight".