77938946582 has 16 divisors (see below), whose sum is σ = 135491450112. Its totient is φ = 32931948840.

The previous prime is 77938946557. The next prime is 77938946651. The reversal of 77938946582 is 28564983977.

It is a happy number.

It is a congruent number.

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, 39203708 + ... + 39205695.

It is an arithmetic number, because the mean of its divisors is an integer number (8468215632).

Almost surely, 2^77938946582 is an apocalyptic number.

77938946582 is a deficient number, since it is larger than the sum of its proper divisors (57552503530).

77938946582 is a wasteful number, since it uses less digits than its factorization.

77938946582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78409483.

The product of its digits is 182891520, while the sum is 68.

The spelling of 77938946582 in words is "seventy-seven billion, nine hundred thirty-eight million, nine hundred forty-six thousand, five hundred eighty-two".