77168208494 has 64 divisors (see below), whose sum is σ = 133307596800. Its totient is φ = 33187898880.

The previous prime is 77168208473. The next prime is 77168208499. The reversal of 77168208494 is 49480286177.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77168208499) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18824057 + ... + 18828155.

It is an arithmetic number, because the mean of its divisors is an integer number (2082931200).

Almost surely, 2^77168208494 is an apocalyptic number.

77168208494 is a deficient number, since it is larger than the sum of its proper divisors (56139388306).

77168208494 is a wasteful number, since it uses less digits than its factorization.

77168208494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4545.

The product of its (nonzero) digits is 5419008, while the sum is 56.

The spelling of 77168208494 in words is "seventy-seven billion, one hundred sixty-eight million, two hundred eight thousand, four hundred ninety-four".