21548954696 has 32 divisors (see below), whose sum is σ = 40501404000. Its totient is φ = 10748618496.

The previous prime is 21548954681. The next prime is 21548954711. The reversal of 21548954696 is 69645984512.

It is an interprime number because it is at equal distance from previous prime (21548954681) and next prime (21548954711).

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, 7642775 + ... + 7645593.

It is an arithmetic number, because the mean of its divisors is an integer number (1265668875).

Almost surely, 2^21548954696 is an apocalyptic number.

It is an amenable number.

21548954696 is a deficient number, since it is larger than the sum of its proper divisors (18952449304).

21548954696 is a wasteful number, since it uses less digits than its factorization.

21548954696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4781 (or 4777 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 59.

The spelling of 21548954696 in words is "twenty-one billion, five hundred forty-eight million, nine hundred fifty-four thousand, six hundred ninety-six".