20780315054 has 16 divisors (see below), whose sum is σ = 31541704560. Its totient is φ = 10266569280.

The previous prime is 20780315047. The next prime is 20780315089. The reversal of 20780315054 is 45051308702.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234392 + ... + 310644.

It is an arithmetic number, because the mean of its divisors is an integer number (1971356535).

Almost surely, 2^20780315054 is an apocalyptic number.

20780315054 is a deficient number, since it is larger than the sum of its proper divisors (10761389506).

20780315054 is a wasteful number, since it uses less digits than its factorization.

20780315054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77875.

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 20780315054 in words is "twenty billion, seven hundred eighty million, three hundred fifteen thousand, fifty-four".