206982522478 has 8 divisors (see below), whose sum is σ = 310496004000. Its totient is φ = 103483854480.

The previous prime is 206982522463. The next prime is 206982522493. The reversal of 206982522478 is 874225289602.

It is an interprime number because it is at equal distance from previous prime (206982522463) and next prime (206982522493).

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

It is a super-2 number, since 2×206982522478² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 3668383 + ... + 3724378.

It is an arithmetic number, because the mean of its divisors is an integer number (38812000500).

Almost surely, 2^206982522478 is an apocalyptic number.

206982522478 is a deficient number, since it is larger than the sum of its proper divisors (103513481522).

206982522478 is a wasteful number, since it uses less digits than its factorization.

206982522478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7406762.

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 206982522478 in words is "two hundred six billion, nine hundred eighty-two million, five hundred twenty-two thousand, four hundred seventy-eight".