1997559297310 has 16 divisors (see below), whose sum is σ = 3595770545616. Its totient is φ = 798987316608.

The previous prime is 1997559297289. The next prime is 1997559297317. The reversal of 1997559297310 is 137929557991.

It is a happy number.

It is a super-2 number, since 2×1997559297310² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1997559297317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4319259 + ... + 4759318.

It is an arithmetic number, because the mean of its divisors is an integer number (224735659101).

Almost surely, 2^{1997559297310} is an apocalyptic number.

1997559297310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1997559297310 is a deficient number, since it is larger than the sum of its proper divisors (1598211248306).

1997559297310 is a wasteful number, since it uses less digits than its factorization.

1997559297310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9100587.

The product of its (nonzero) digits is 48223350, while the sum is 67.

The spelling of 1997559297310 in words is "one trillion, nine hundred ninety-seven billion, five hundred fifty-nine million, two hundred ninety-seven thousand, three hundred ten".