206377720475 has 6 divisors (see below), whose sum is σ = 255908373420. Its totient is φ = 165102176360.

The previous prime is 206377720469. The next prime is 206377720541. The reversal of 206377720475 is 574027773602.

It is not a de Polignac number, because 206377720475 - 2²⁰ = 206376671899 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4127554385 + ... + 4127554434.

It is an arithmetic number, because the mean of its divisors is an integer number (42651395570).

Almost surely, 2^206377720475 is an apocalyptic number.

206377720475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

206377720475 is a deficient number, since it is larger than the sum of its proper divisors (49530652945).

206377720475 is an equidigital number, since it uses as much as digits as its factorization.

206377720475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8255108829 (or 8255108824 counting only the distinct ones).

The product of its (nonzero) digits is 3457440, while the sum is 50.

The spelling of 206377720475 in words is "two hundred six billion, three hundred seventy-seven million, seven hundred twenty thousand, four hundred seventy-five".