20353793784 has 16 divisors (see below), whose sum is σ = 50884484520. Its totient is φ = 6784597920.

The previous prime is 20353793749. The next prime is 20353793893. The reversal of 20353793784 is 48739735302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424037347 + ... + 424037394.

Almost surely, 2^20353793784 is an apocalyptic number.

20353793784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20353793784 is an abundant number, since it is smaller than the sum of its proper divisors (30530690736).

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

20353793784 is a wasteful number, since it uses less digits than its factorization.

20353793784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848074750 (or 848074746 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 51.

The spelling of 20353793784 in words is "twenty billion, three hundred fifty-three million, seven hundred ninety-three thousand, seven hundred eighty-four".