1199968393977 has 12 divisors (see below), whose sum is σ = 1797483520560. Its totient is φ = 799978929156.

The previous prime is 1199968393969. The next prime is 1199968393979. The reversal of 1199968393977 is 7793938699911.

It is a happy number.

1199968393977 is a `hidden beast` number, since 1 + 19 + 99 + 68 + 393 + 9 + 77 = 666.

It is not a de Polignac number, because 1199968393977 - 2³ = 1199968393969 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 1199968393896 and 1199968393905.

It is not an unprimeable number, because it can be changed into a prime (1199968393979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2469070527 + ... + 2469071012.

It is an arithmetic number, because the mean of its divisors is an integer number (149790293380).

Almost surely, 2^{1199968393977} is an apocalyptic number.

It is an amenable number.

1199968393977 is a deficient number, since it is larger than the sum of its proper divisors (597515126583).

1199968393977 is an frugal number, since it uses more digits than its factorization.

1199968393977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4938141554 (or 4938141542 counting only the distinct ones).

The product of its digits is 1249949232, while the sum is 81.

The spelling of 1199968393977 in words is "one trillion, one hundred ninety-nine billion, nine hundred sixty-eight million, three hundred ninety-three thousand, nine hundred seventy-seven".