20135744742404 has 6 divisors (see below), whose sum is σ = 35237553299214. Its totient is φ = 10067872371200.

The previous prime is 20135744742403. The next prime is 20135744742427. The reversal of 20135744742404 is 40424744753102.

It can be written as a sum of positive squares in only one way, i.e., 11187031468804 + 8948713273600 = 3344702^2 + 2991440^2 .

It is not an unprimeable number, because it can be changed into a prime (20135744742403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2516968092797 + ... + 2516968092804.

It is an arithmetic number, because the mean of its divisors is an integer number (5872925549869).

Almost surely, 2^{20135744742404} is an apocalyptic number.

It is an amenable number.

20135744742404 is a deficient number, since it is larger than the sum of its proper divisors (15101808556810).

20135744742404 is a wasteful number, since it uses less digits than its factorization.

20135744742404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5033936185605 (or 5033936185603 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 47.

The spelling of 20135744742404 in words is "twenty trillion, one hundred thirty-five billion, seven hundred forty-four million, seven hundred forty-two thousand, four hundred four".