20366777774 has 12 divisors (see below), whose sum is σ = 35537949144. Its totient is φ = 8728619004.

The previous prime is 20366777741. The next prime is 20366777819. The reversal of 20366777774 is 47777766302.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 103912034 + ... + 103912229.

It is an arithmetic number, because the mean of its divisors is an integer number (2961495762).

Almost surely, 2^20366777774 is an apocalyptic number.

20366777774 is a deficient number, since it is larger than the sum of its proper divisors (15171171370).

20366777774 is a wasteful number, since it uses less digits than its factorization.

20366777774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207824279 (or 207824272 counting only the distinct ones).

The product of its (nonzero) digits is 14521248, while the sum is 56.

The spelling of 20366777774 in words is "twenty billion, three hundred sixty-six million, seven hundred seventy-seven thousand, seven hundred seventy-four".