6694015722240 has 3888 divisors, whose sum is σ = 31397970207744. Its totient is φ = 1200232857600.

The previous prime is 6694015722227. The next prime is 6694015722241. The reversal of 6694015722240 is 422275104966.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 6694015722240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6694015722241) by changing a digit.

It is a polite number, since it can be written in 431 ways as a sum of consecutive naturals, for example, 215935991025 + ... + 215935991055.

Almost surely, 2^{6694015722240} is an apocalyptic number.

6694015722240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6694015722240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15698985103872).

6694015722240 is an abundant number, since it is smaller than the sum of its proper divisors (24703954485504).

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

6694015722240 is a wasteful number, since it uses less digits than its factorization.

6694015722240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 6694015722240 in words is "six trillion, six hundred ninety-four billion, fifteen million, seven hundred twenty-two thousand, two hundred forty".