1322991990552 has 32 divisors (see below), whose sum is σ = 3308958644400. Its totient is φ = 440800174464.

The previous prime is 1322991990547. The next prime is 1322991990557. The reversal of 1322991990552 is 2550991992231.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1322991990547) and next prime (1322991990557).

It is a junction number, because it is equal to n+sod(n) for n = 1322991990492 and 1322991990501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322991990557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12267427 + ... + 12374802.

Almost surely, 2^{1322991990552} is an apocalyptic number.

1322991990552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1322991990552 is an abundant number, since it is smaller than the sum of its proper divisors (1985966653848).

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

1322991990552 is a wasteful number, since it uses less digits than its factorization.

1322991990552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24644475 (or 24644471 counting only the distinct ones).

The product of its (nonzero) digits is 3936600, while the sum is 57.

The spelling of 1322991990552 in words is "one trillion, three hundred twenty-two billion, nine hundred ninety-one million, nine hundred ninety thousand, five hundred fifty-two".