1997487880848 has 60 divisors (see below), whose sum is σ = 5797235928848. Its totient is φ = 665829292320.

The previous prime is 1997487880823. The next prime is 1997487880877. The reversal of 1997487880848 is 8480887847991.

1997487880848 is a `hidden beast` number, since 1 + 9 + 97 + 487 + 8 + 8 + 0 + 8 + 48 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 256874698 + ... + 256882473.

Almost surely, 2^{1997487880848} is an apocalyptic number.

1997487880848 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1997487880848 is an abundant number, since it is smaller than the sum of its proper divisors (3799748048000).

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

1997487880848 is an equidigital number, since it uses as much as digits as its factorization.

1997487880848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513757194 (or 513757176 counting only the distinct ones).

The product of its (nonzero) digits is 2080899072, while the sum is 81.

The spelling of 1997487880848 in words is "one trillion, nine hundred ninety-seven billion, four hundred eighty-seven million, eight hundred eighty thousand, eight hundred forty-eight".