1377478780772 has 24 divisors (see below), whose sum is σ = 2426476334016. Its totient is φ = 684201761568.

The previous prime is 1377478780771. The next prime is 1377478780789. The reversal of 1377478780772 is 2770878747731.

It is not an unprimeable number, because it can be changed into a prime (1377478780771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2638823 + ... + 3117425.

It is an arithmetic number, because the mean of its divisors is an integer number (101103180584).

Almost surely, 2^{1377478780772} is an apocalyptic number.

It is an amenable number.

1377478780772 is a deficient number, since it is larger than the sum of its proper divisors (1048997553244).

1377478780772 is a wasteful number, since it uses less digits than its factorization.

1377478780772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483347 (or 483345 counting only the distinct ones).

The product of its (nonzero) digits is 180708864, while the sum is 68.

The spelling of 1377478780772 in words is "one trillion, three hundred seventy-seven billion, four hundred seventy-eight million, seven hundred eighty thousand, seven hundred seventy-two".