20407350550 has 48 divisors (see below), whose sum is σ = 38713191840. Its totient is φ = 8000778240.

The previous prime is 20407350527. The next prime is 20407350563. The reversal of 20407350550 is 5505370402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3052111 + ... + 3058789.

It is an arithmetic number, because the mean of its divisors is an integer number (806524830).

Almost surely, 2^20407350550 is an apocalyptic number.

20407350550 is a deficient number, since it is larger than the sum of its proper divisors (18305841290).

20407350550 is a wasteful number, since it uses less digits than its factorization.

20407350550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7897 (or 7892 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 31.

The spelling of 20407350550 in words is "twenty billion, four hundred seven million, three hundred fifty thousand, five hundred fifty".