20555451350 has 24 divisors (see below), whose sum is σ = 43695017328. Its totient is φ = 7047583200.

The previous prime is 20555451341. The next prime is 20555451391. The reversal of 20555451350 is 5315455502.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 20555451350.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29364581 + ... + 29365280.

It is an arithmetic number, because the mean of its divisors is an integer number (1820625722).

Almost surely, 2^20555451350 is an apocalyptic number.

20555451350 is an abundant number, since it is smaller than the sum of its proper divisors (23139565978).

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

20555451350 is a wasteful number, since it uses less digits than its factorization.

20555451350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58729880 (or 58729875 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 35.

The spelling of 20555451350 in words is "twenty billion, five hundred fifty-five million, four hundred fifty-one thousand, three hundred fifty".