1292787550388 has 48 divisors (see below), whose sum is σ = 2347366748160. Its totient is φ = 622520121600.

The previous prime is 1292787550289. The next prime is 1292787550393. The reversal of 1292787550388 is 8830557872921.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116766893 + ... + 116777963.

It is an arithmetic number, because the mean of its divisors is an integer number (48903473920).

Almost surely, 2^{1292787550388} is an apocalyptic number.

It is an amenable number.

1292787550388 is a deficient number, since it is larger than the sum of its proper divisors (1054579197772).

1292787550388 is a wasteful number, since it uses less digits than its factorization.

1292787550388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20208 (or 20206 counting only the distinct ones).

The product of its (nonzero) digits is 67737600, while the sum is 65.

The spelling of 1292787550388 in words is "one trillion, two hundred ninety-two billion, seven hundred eighty-seven million, five hundred fifty thousand, three hundred eighty-eight".