20551005324 has 36 divisors (see below), whose sum is σ = 53739700560. Its totient is φ = 6614116320.

The previous prime is 20551005313. The next prime is 20551005329. The reversal of 20551005324 is 42350015502.

It is a happy number.

20551005324 is a `hidden beast` number, since 20 + 5 + 5 + 100 + 532 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (20551005329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9841392 + ... + 9843479.

It is an arithmetic number, because the mean of its divisors is an integer number (1492769460).

Almost surely, 2^20551005324 is an apocalyptic number.

It is an amenable number.

20551005324 is an abundant number, since it is smaller than the sum of its proper divisors (33188695236).

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

20551005324 is a wasteful number, since it uses less digits than its factorization.

20551005324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19684910 (or 19684905 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The spelling of 20551005324 in words is "twenty billion, five hundred fifty-one million, five thousand, three hundred twenty-four".