20477701043 has 16 divisors (see below), whose sum is σ = 21314453664. Its totient is φ = 19657693440.

The previous prime is 20477701039. The next prime is 20477701063. The reversal of 20477701043 is 34010777402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20477701043 - 2² = 20477701039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20477700994 and 20477701012.

It is not an unprimeable number, because it can be changed into a prime (20477701063) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2735021 + ... + 2742497.

It is an arithmetic number, because the mean of its divisors is an integer number (1332153354).

Almost surely, 2^20477701043 is an apocalyptic number.

20477701043 is a deficient number, since it is larger than the sum of its proper divisors (836752621).

20477701043 is an equidigital number, since it uses as much as digits as its factorization.

20477701043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8582.

The product of its (nonzero) digits is 32928, while the sum is 35.

The spelling of 20477701043 in words is "twenty billion, four hundred seventy-seven million, seven hundred one thousand, forty-three".