20635774227399 has 8 divisors (see below), whose sum is σ = 27514751045632. Its totient is φ = 13756990113720.

The previous prime is 20635774227373. The next prime is 20635774227401. The reversal of 20635774227399 is 99372247753602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20635774227399 - 2¹⁵ = 20635774194631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20635774227329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47926087 + ... + 48354744.

It is an arithmetic number, because the mean of its divisors is an integer number (3439343880704).

Almost surely, 2^{20635774227399} is an apocalyptic number.

20635774227399 is a deficient number, since it is larger than the sum of its proper divisors (6878976818233).

20635774227399 is an equidigital number, since it uses as much as digits as its factorization.

20635774227399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96352277.

The product of its (nonzero) digits is 240045120, while the sum is 66.

The spelling of 20635774227399 in words is "twenty trillion, six hundred thirty-five billion, seven hundred seventy-four million, two hundred twenty-seven thousand, three hundred ninety-nine".