20145317440706 has 16 divisors (see below), whose sum is σ = 31034803242240. Its totient is φ = 9800385220080.

The previous prime is 20145317440663. The next prime is 20145317440769. The reversal of 20145317440706 is 60704471354102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27737741 + ... + 28454751.

It is an arithmetic number, because the mean of its divisors is an integer number (1939675202640).

Almost surely, 2^{20145317440706} is an apocalyptic number.

20145317440706 is a deficient number, since it is larger than the sum of its proper divisors (10889485801534).

20145317440706 is a wasteful number, since it uses less digits than its factorization.

20145317440706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096729.

The product of its (nonzero) digits is 564480, while the sum is 44.

Adding to 20145317440706 its reverse (60704471354102), we get a palindrome (80849788794808).

The spelling of 20145317440706 in words is "twenty trillion, one hundred forty-five billion, three hundred seventeen million, four hundred forty thousand, seven hundred six".