1977365099386 has 8 divisors (see below), whose sum is σ = 2967287124564. Its totient is φ = 988269391200.

The previous prime is 1977365099287. The next prime is 1977365099407. The reversal of 1977365099386 is 6839905637791.

It can be written as a sum of positive squares in 2 ways, for example, as 1501445862225 + 475919237161 = 1225335^2 + 689869^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206573265 + ... + 206582836.

Almost surely, 2^{1977365099386} is an apocalyptic number.

1977365099386 is a deficient number, since it is larger than the sum of its proper divisors (989922025178).

1977365099386 is a wasteful number, since it uses less digits than its factorization.

1977365099386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413158496.

The product of its (nonzero) digits is 462944160, while the sum is 73.

The spelling of 1977365099386 in words is "one trillion, nine hundred seventy-seven billion, three hundred sixty-five million, ninety-nine thousand, three hundred eighty-six".