1997017477048 has 32 divisors (see below), whose sum is σ = 4099993686000. Its totient is φ = 904360725760.

The previous prime is 1997017476917. The next prime is 1997017477069. The reversal of 1997017477048 is 8407747107991.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42157333 + ... + 42204676.

Almost surely, 2^{1997017477048} is an apocalyptic number.

It is an amenable number.

1997017477048 is an abundant number, since it is smaller than the sum of its proper divisors (2102976208952).

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

1997017477048 is a wasteful number, since it uses less digits than its factorization.

1997017477048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84362295 (or 84362291 counting only the distinct ones).

The product of its (nonzero) digits is 24893568, while the sum is 64.

The spelling of 1997017477048 in words is "one trillion, nine hundred ninety-seven billion, seventeen million, four hundred seventy-seven thousand, forty-eight".