1977297194896 has 45 divisors (see below), whose sum is σ = 3844760911771. Its totient is φ = 985113501152.

The previous prime is 1977297194881. The next prime is 1977297194909. The reversal of 1977297194896 is 6984917927791.

The square root of 1977297194896 is 1406164.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2356730445 + ... + 2356731283.

Almost surely, 2^{1977297194896} is an apocalyptic number.

1977297194896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1977297194896 is the 1406164-th square number.

It is an amenable number.

1977297194896 is a deficient number, since it is larger than the sum of its proper divisors (1867463716875).

1977297194896 is an frugal number, since it uses more digits than its factorization.

1977297194896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2524 (or 1260 counting only the distinct ones).

The product of its digits is 864162432, while the sum is 79.

The spelling of 1977297194896 in words is "one trillion, nine hundred seventy-seven billion, two hundred ninety-seven million, one hundred ninety-four thousand, eight hundred ninety-six".