1229649797376 has 2592 divisors, whose sum is σ = 5228349235200. Its totient is φ = 285310771200.

The previous prime is 1229649797371. The next prime is 1229649797399. The reversal of 1229649797376 is 6737979469221.

It is a happy number.

1229649797376 is a `hidden beast` number, since 1 + 2 + 29 + 64 + 97 + 97 + 376 = 666.

It is a tau number, because it is divible by the number of its divisors (2592).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1229649797371) by changing a digit.

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 287 ways as a sum of consecutive naturals, for example, 39666122481 + ... + 39666122511.

Almost surely, 2^{1229649797376} is an apocalyptic number.

1229649797376 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 1229649797376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2614174617600).

1229649797376 is an abundant number, since it is smaller than the sum of its proper divisors (3998699437824).

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

1229649797376 is an equidigital number, since it uses as much as digits as its factorization.

1229649797376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 67 counting only the distinct ones).

The product of its digits is 432081216, while the sum is 72.

The spelling of 1229649797376 in words is "one trillion, two hundred twenty-nine billion, six hundred forty-nine million, seven hundred ninety-seven thousand, three hundred seventy-six".