206849401836 has 72 divisors (see below), whose sum is σ = 612489157056. Its totient is φ = 53727115680.

The previous prime is 206849401823. The next prime is 206849401849. The reversal of 206849401836 is 638104948602.

206849401836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (206849401823) and next prime (206849401849).

It is a super-2 number, since 2×206849401836² (a number of 23 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 15983746 + ... + 15996681.

It is an arithmetic number, because the mean of its divisors is an integer number (8506793848).

Almost surely, 2^206849401836 is an apocalyptic number.

It is an amenable number.

206849401836 is an abundant number, since it is smaller than the sum of its proper divisors (405639755220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206849401836 is a wasteful number, since it uses less digits than its factorization.

206849401836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31980459 (or 31980450 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 51.

The spelling of 206849401836 in words is "two hundred six billion, eight hundred forty-nine million, four hundred one thousand, eight hundred thirty-six".