997603411500 has 480 divisors, whose sum is σ = 3357505831680. Its totient is φ = 257739840000.

The previous prime is 997603411463. The next prime is 997603411517. The reversal of 997603411500 is 5114306799.

997603411500 is a `hidden beast` number, since 99 + 76 + 0 + 341 + 150 + 0 = 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 polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 192250906 + ... + 192256094.

It is an arithmetic number, because the mean of its divisors is an integer number (6994803816).

Almost surely, 2^997603411500 is an apocalyptic number.

997603411500 is a gapful number since it is divisible by the number (90) 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 997603411500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1678752915840).

997603411500 is an abundant number, since it is smaller than the sum of its proper divisors (2359902420180).

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

997603411500 is a wasteful number, since it uses less digits than its factorization.

997603411500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5368 (or 5347 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The spelling of 997603411500 in words is "nine hundred ninety-seven billion, six hundred three million, four hundred eleven thousand, five hundred".