1397723222016 has 312 divisors, whose sum is σ = 4426796462400. Its totient is φ = 421399756800.

The previous prime is 1397723221981. The next prime is 1397723222087. The reversal of 1397723222016 is 6102223277931.

1397723222016 is a `hidden beast` number, since 1 + 397 + 7 + 2 + 32 + 220 + 1 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80686636 + ... + 80703956.

It is an arithmetic number, because the mean of its divisors is an integer number (14188450200).

Almost surely, 2^{1397723222016} is an apocalyptic number.

1397723222016 is a gapful number since it is divisible by the number (16) 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 1397723222016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2213398231200).

1397723222016 is an abundant number, since it is smaller than the sum of its proper divisors (3029073240384).

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

1397723222016 is a wasteful number, since it uses less digits than its factorization.

1397723222016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17561 (or 17536 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

Adding to 1397723222016 its reverse (6102223277931), we get a palindrome (7499946499947).

The spelling of 1397723222016 in words is "one trillion, three hundred ninety-seven billion, seven hundred twenty-three million, two hundred twenty-two thousand, sixteen".