1397622227400 has 3456 divisors, whose sum is σ = 6668573184000. Its totient is φ = 269007298560.

The previous prime is 1397622227399. The next prime is 1397622227447. The reversal of 1397622227400 is 47222267931.

1397622227400 is a `hidden beast` number, since 13 + 9 + 7 + 6 + 2 + 2 + 227 + 400 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 863 ways as a sum of consecutive naturals, for example, 17691420561 + ... + 17691420639.

It is an arithmetic number, because the mean of its divisors is an integer number (1929564000).

Almost surely, 2^{1397622227400} is an apocalyptic number.

1397622227400 is a gapful number since it is divisible by the number (10) 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 1397622227400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3334286592000).

1397622227400 is an abundant number, since it is smaller than the sum of its proper divisors (5270950956600).

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

1397622227400 is a wasteful number, since it uses less digits than its factorization.

1397622227400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The spelling of 1397622227400 in words is "one trillion, three hundred ninety-seven billion, six hundred twenty-two million, two hundred twenty-seven thousand, four hundred".