387553778872136 has 32 divisors (see below), whose sum is σ = 751722238179000. Its totient is φ = 187094542849536.

The previous prime is 387553778872109. The next prime is 387553778872151. The reversal of 387553778872136 is 631278877355783.

It can be written as a sum of positive squares in 4 ways, for example, as 331329186002500 + 56224592869636 = 18202450^2 + 7498306^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134540030 + ... + 137390418.

Almost surely, 2^{387553778872136} is an apocalyptic number.

It is an amenable number.

387553778872136 is a deficient number, since it is larger than the sum of its proper divisors (364168459306864).

387553778872136 is a wasteful number, since it uses less digits than its factorization.

387553778872136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3436481 (or 3436477 counting only the distinct ones).

The product of its digits is 9957427200, while the sum is 80.

The spelling of 387553778872136 in words is "three hundred eighty-seven trillion, five hundred fifty-three billion, seven hundred seventy-eight million, eight hundred seventy-two thousand, one hundred thirty-six".