20551380848 has 20 divisors (see below), whose sum is σ = 39897477648. Its totient is φ = 10255257600.

The previous prime is 20551380841. The next prime is 20551380853. The reversal of 20551380848 is 84808315502.

It is a junction number, because it is equal to n+sod(n) for n = 20551380799 and 20551380808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20551380841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1268753 + ... + 1284848.

Almost surely, 2^20551380848 is an apocalyptic number.

It is an amenable number.

20551380848 is a deficient number, since it is larger than the sum of its proper divisors (19346096800).

20551380848 is a wasteful number, since it uses less digits than its factorization.

20551380848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2554112 (or 2554106 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 44.

The spelling of 20551380848 in words is "twenty billion, five hundred fifty-one million, three hundred eighty thousand, eight hundred forty-eight".