77448487842 has 48 divisors (see below), whose sum is σ = 183110421312. Its totient is φ = 23462782560.

The previous prime is 77448487771. The next prime is 77448487867. The reversal of 77448487842 is 24878484477.

77448487842 is a `hidden beast` number, since 7 + 74 + 4 + 8 + 487 + 84 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 77448487842.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 693948 + ... + 797784.

It is an arithmetic number, because the mean of its divisors is an integer number (3814800444).

Almost surely, 2^77448487842 is an apocalyptic number.

77448487842 is an abundant number, since it is smaller than the sum of its proper divisors (105661933470).

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

77448487842 is a wasteful number, since it uses less digits than its factorization.

77448487842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107623 (or 107620 counting only the distinct ones).

The product of its digits is 89915392, while the sum is 63.

The spelling of 77448487842 in words is "seventy-seven billion, four hundred forty-eight million, four hundred eighty-seven thousand, eight hundred forty-two".