20776435955 has 8 divisors (see below), whose sum is σ = 27198243504. Its totient is φ = 15110135200.

The previous prime is 20776435937. The next prime is 20776436017. The reversal of 20776435955 is 55953467702.

It is a happy number.

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

It is not a de Polignac number, because 20776435955 - 2¹² = 20776431859 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20776435897 and 20776435906.

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, 188876636 + ... + 188876745.

It is an arithmetic number, because the mean of its divisors is an integer number (3399780438).

Almost surely, 2^20776435955 is an apocalyptic number.

20776435955 is a deficient number, since it is larger than the sum of its proper divisors (6421807549).

20776435955 is a wasteful number, since it uses less digits than its factorization.

20776435955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377753397.

The product of its (nonzero) digits is 7938000, while the sum is 53.

The spelling of 20776435955 in words is "twenty billion, seven hundred seventy-six million, four hundred thirty-five thousand, nine hundred fifty-five".