20785701377 has 8 divisors (see below), whose sum is σ = 25005355200. Its totient is φ = 16878614544.

The previous prime is 20785701373. The next prime is 20785701397. The reversal of 20785701377 is 77310758702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20785701377 - 2² = 20785701373 is a prime.

It is a super-2 number, since 2×20785701377² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20785701373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78141602 + ... + 78141867.

It is an arithmetic number, because the mean of its divisors is an integer number (3125669400).

Almost surely, 2^20785701377 is an apocalyptic number.

It is an amenable number.

20785701377 is a deficient number, since it is larger than the sum of its proper divisors (4219653823).

20785701377 is a wasteful number, since it uses less digits than its factorization.

20785701377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156283495.

The product of its (nonzero) digits is 576240, while the sum is 47.

The spelling of 20785701377 in words is "twenty billion, seven hundred eighty-five million, seven hundred one thousand, three hundred seventy-seven".