1997034491272 has 32 divisors (see below), whose sum is σ = 3941632821600. Its totient is φ = 945935535744.

The previous prime is 1997034491237. The next prime is 1997034491297. The reversal of 1997034491272 is 2721944307991.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5461663 + ... + 5815825.

It is an arithmetic number, because the mean of its divisors is an integer number (123176025675).

Almost surely, 2^{1997034491272} is an apocalyptic number.

It is an amenable number.

1997034491272 is a deficient number, since it is larger than the sum of its proper divisors (1944598330328).

1997034491272 is a wasteful number, since it uses less digits than its factorization.

1997034491272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391285 (or 391281 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 58.

The spelling of 1997034491272 in words is "one trillion, nine hundred ninety-seven billion, thirty-four million, four hundred ninety-one thousand, two hundred seventy-two".