997552000000 has 154 divisors (see below), whose sum is σ = 2492670359036. Its totient is φ = 399014400000.

The previous prime is 997551999973. The next prime is 997552000037. The reversal of 997552000000 is 255799.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 15968827 + ... + 16031173.

Almost surely, 2^997552000000 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 997552000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1246335179518).

997552000000 is an abundant number, since it is smaller than the sum of its proper divisors (1495118359036).

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

997552000000 is an frugal number, since it uses more digits than its factorization.

997552000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62397 (or 62354 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 37.

Adding to 997552000000 its reverse (255799), we get a palindrome (997552255799).

The spelling of 997552000000 in words is "nine hundred ninety-seven billion, five hundred fifty-two million", and thus it is an aban number.