20779633743 has 16 divisors (see below), whose sum is σ = 30227811456. Its totient is φ = 12592513440.

The previous prime is 20779633723. The next prime is 20779633753. The reversal of 20779633743 is 34733697702.

It is not a de Polignac number, because 20779633743 - 2⁵ = 20779633711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20779633703) 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, 421380 + ... + 468102.

It is an arithmetic number, because the mean of its divisors is an integer number (1889238216).

Almost surely, 2^20779633743 is an apocalyptic number.

20779633743 is a deficient number, since it is larger than the sum of its proper divisors (9448177713).

20779633743 is a wasteful number, since it uses less digits than its factorization.

20779633743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60214.

The product of its (nonzero) digits is 4000752, while the sum is 51.

The spelling of 20779633743 in words is "twenty billion, seven hundred seventy-nine million, six hundred thirty-three thousand, seven hundred forty-three".