20703563771 has 16 divisors (see below), whose sum is σ = 22686168960. Its totient is φ = 18737897280.

The previous prime is 20703563633. The next prime is 20703563819. The reversal of 20703563771 is 17736530702.

It is a cyclic number.

It is not a de Polignac number, because 20703563771 - 2¹⁴ = 20703547387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20703563071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2343200 + ... + 2352018.

It is an arithmetic number, because the mean of its divisors is an integer number (1417885560).

Almost surely, 2^20703563771 is an apocalyptic number.

20703563771 is a deficient number, since it is larger than the sum of its proper divisors (1982605189).

20703563771 is a wasteful number, since it uses less digits than its factorization.

20703563771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9754.

The product of its (nonzero) digits is 185220, while the sum is 41.

The spelling of 20703563771 in words is "twenty billion, seven hundred three million, five hundred sixty-three thousand, seven hundred seventy-one".