6721787664150 has 48 divisors (see below), whose sum is σ = 17952343674384. Its totient is φ = 1654593886080.

The previous prime is 6721787664131. The next prime is 6721787664169. The reversal of 6721787664150 is 514667871276.

It is an interprime number because it is at equal distance from previous prime (6721787664131) and next prime (6721787664169).

It is a super-2 number, since 2×6721787664150² (a number of 26 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1723533349 + ... + 1723537248.

It is an arithmetic number, because the mean of its divisors is an integer number (374007159883).

Almost surely, 2^{6721787664150} is an apocalyptic number.

6721787664150 is an abundant number, since it is smaller than the sum of its proper divisors (11230556010234).

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

6721787664150 is a wasteful number, since it uses less digits than its factorization.

6721787664150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3447070625 (or 3447070620 counting only the distinct ones).

The product of its (nonzero) digits is 23708160, while the sum is 60.

The spelling of 6721787664150 in words is "six trillion, seven hundred twenty-one billion, seven hundred eighty-seven million, six hundred sixty-four thousand, one hundred fifty".