1404991607808 has 176 divisors, whose sum is σ = 3848019379200. Its totient is φ = 455546363904.

The previous prime is 1404991607801. The next prime is 1404991607837. The reversal of 1404991607808 is 8087061994041.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1404991607801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23504743 + ... + 23564441.

Almost surely, 2^{1404991607808} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1404991607808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1924009689600).

1404991607808 is an abundant number, since it is smaller than the sum of its proper divisors (2443027771392).

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

1404991607808 is a wasteful number, since it uses less digits than its factorization.

1404991607808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59932 (or 59914 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 57.

The spelling of 1404991607808 in words is "one trillion, four hundred four billion, nine hundred ninety-one million, six hundred seven thousand, eight hundred eight".