20145207614773 has 16 divisors (see below), whose sum is σ = 20683757341440. Its totient is φ = 19613829920256.

The previous prime is 20145207614767. The next prime is 20145207614839. The reversal of 20145207614773 is 37741670254102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20145207614773 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 (20145207314773) 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, 14499661 + ... + 15828157.

It is an arithmetic number, because the mean of its divisors is an integer number (1292734833840).

Almost surely, 2^{20145207614773} is an apocalyptic number.

It is an amenable number.

20145207614773 is a deficient number, since it is larger than the sum of its proper divisors (538549726667).

20145207614773 is a wasteful number, since it uses less digits than its factorization.

20145207614773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331196.

The product of its (nonzero) digits is 1975680, while the sum is 49.

Adding to 20145207614773 its reverse (37741670254102), we get a palindrome (57886877868875).

The spelling of 20145207614773 in words is "twenty trillion, one hundred forty-five billion, two hundred seven million, six hundred fourteen thousand, seven hundred seventy-three".