20702206455 has 64 divisors (see below), whose sum is σ = 38465445888. Its totient is φ = 9312566400.

The previous prime is 20702206451. The next prime is 20702206489. The reversal of 20702206455 is 55460220702.

It is not a de Polignac number, because 20702206455 - 2² = 20702206451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20702206451) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1690384 + ... + 1702586.

It is an arithmetic number, because the mean of its divisors is an integer number (601022592).

Almost surely, 2^20702206455 is an apocalyptic number.

20702206455 is a deficient number, since it is larger than the sum of its proper divisors (17763239433).

20702206455 is a wasteful number, since it uses less digits than its factorization.

20702206455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12476.

The product of its (nonzero) digits is 33600, while the sum is 33.

The spelling of 20702206455 in words is "twenty billion, seven hundred two million, two hundred six thousand, four hundred fifty-five".