206671962063840 has 288 divisors, whose sum is σ = 815559359196960. Its totient is φ = 43605512810496.

The previous prime is 206671962063821. The next prime is 206671962063859. The reversal of 206671962063840 is 48360269176602.

It is an interprime number because it is at equal distance from previous prime (206671962063821) and next prime (206671962063859).

It is a super-2 number, since 2×206671962063840² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 337658595 + ... + 338270114.

It is an arithmetic number, because the mean of its divisors is an integer number (2831803330545).

Almost surely, 2^{206671962063840} is an apocalyptic number.

206671962063840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206671962063840 is an abundant number, since it is smaller than the sum of its proper divisors (608887397133120).

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

206671962063840 is a wasteful number, since it uses less digits than its factorization.

206671962063840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675928754 (or 675928739 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 60.

The spelling of 206671962063840 in words is "two hundred six trillion, six hundred seventy-one billion, nine hundred sixty-two million, sixty-three thousand, eight hundred forty".