742778895049668 has 60 divisors (see below), whose sum is σ = 1974682122169680. Its totient is φ = 243396474077808.

The previous prime is 742778895049651. The next prime is 742778895049687. The reversal of 742778895049668 is 866940598877247.

742778895049668 is a `hidden beast` number, since 7 + 4 + 2 + 7 + 7 + 8 + 8 + 9 + 50 + 496 + 68 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19428179646 + ... + 19428217877.

It is an arithmetic number, because the mean of its divisors is an integer number (32911368702828).

Almost surely, 2^{742778895049668} is an apocalyptic number.

It is an amenable number.

742778895049668 is an abundant number, since it is smaller than the sum of its proper divisors (1231903227120012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

742778895049668 is a wasteful number, since it uses less digits than its factorization.

742778895049668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38856397598 (or 38856397587 counting only the distinct ones).

The product of its (nonzero) digits is 81935400960, while the sum is 90.

The spelling of 742778895049668 in words is "seven hundred forty-two trillion, seven hundred seventy-eight billion, eight hundred ninety-five million, forty-nine thousand, six hundred sixty-eight".