206867157955 has 4 divisors (see below), whose sum is σ = 248240589552. Its totient is φ = 165493726360.

The previous prime is 206867157947. The next prime is 206867158009. The reversal of 206867157955 is 559751768602.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 206867157955 - 2³ = 206867157947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206867157893 and 206867157902.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20686715791 + ... + 20686715800.

It is an arithmetic number, because the mean of its divisors is an integer number (62060147388).

Almost surely, 2^206867157955 is an apocalyptic number.

206867157955 is a deficient number, since it is larger than the sum of its proper divisors (41373431597).

206867157955 is an equidigital number, since it uses as much as digits as its factorization.

206867157955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41373431596.

The product of its (nonzero) digits is 31752000, while the sum is 61.

The spelling of 206867157955 in words is "two hundred six billion, eight hundred sixty-seven million, one hundred fifty-seven thousand, nine hundred fifty-five".