20770842047 has 16 divisors (see below), whose sum is σ = 23089570560. Its totient is φ = 18595285632.

The previous prime is 20770842019. The next prime is 20770842067. The reversal of 20770842047 is 74024807702.

It is a cyclic number.

It is not a de Polignac number, because 20770842047 - 2¹⁰ = 20770841023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20770841995 and 20770842013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20770842007) 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, 250058 + ... + 322599.

It is an arithmetic number, because the mean of its divisors is an integer number (1443098160).

Almost surely, 2^20770842047 is an apocalyptic number.

20770842047 is a deficient number, since it is larger than the sum of its proper divisors (2318728513).

20770842047 is a wasteful number, since it uses less digits than its factorization.

20770842047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572782.

The product of its (nonzero) digits is 175616, while the sum is 41.

The spelling of 20770842047 in words is "twenty billion, seven hundred seventy million, eight hundred forty-two thousand, forty-seven".