1373977641249 has 20 divisors (see below), whose sum is σ = 2071315270420. Its totient is φ = 907581555360.

The previous prime is 1373977641209. The next prime is 1373977641259. The reversal of 1373977641249 is 9421467793731.

1373977641249 is a `hidden beast` number, since 137 + 397 + 7 + 64 + 12 + 49 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 486506250000 + 887471391249 = 697500^2 + 942057^2 .

It is not a de Polignac number, because 1373977641249 - 2²⁹ = 1373440770337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1373977641209) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 77801662 + ... + 77819319.

It is an arithmetic number, because the mean of its divisors is an integer number (103565763521).

Almost surely, 2^{1373977641249} is an apocalyptic number.

It is an amenable number.

1373977641249 is a deficient number, since it is larger than the sum of its proper divisors (697337629171).

1373977641249 is a wasteful number, since it uses less digits than its factorization.

1373977641249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155621102 (or 155621093 counting only the distinct ones).

The product of its digits is 48009024, while the sum is 63.

The spelling of 1373977641249 in words is "one trillion, three hundred seventy-three billion, nine hundred seventy-seven million, six hundred forty-one thousand, two hundred forty-nine".